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History Of Phagocytosis
The history of phagocytosis is an account of the discoveries of cells, known as phagocytes, that are capable of eating other cells or particles, and how that eventually established the science of immunology. Phagocytosis is broadly used in two ways in different organisms, for feeding in unicellular organisms (protists) and for immune response to protect the body against infections in metazoans. Although it is found in a variety of organisms with different functions, its fundamental process is cellular ingestion of foreign (external) materials, and thus, is considered as an evolutionary conserved process. The biological theory and concept, experimental observations and the name, phagocyte () were introduced by a Ukrainian zoologist Élie Metchnikoff in 1883, the moment regarded as the foundation or birth of immunology. The discovery of phagocytes and the process of innate immunity earned Metchnikoff the 1908 Nobel Prize in Physiology or Medicine, and the epithet "father of natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutrophil With Anthrax Copy
Neutrophils are a type of Phagocytosis, phagocytic white blood cell and part of Innate immune system, innate immunity. More specifically, they form the most abundant type of granulocytes and make up 40% to 70% of all white blood cells in humans. Their functions vary in different animals. They are also known as neutrocytes, heterophils or polymorphonuclear leukocytes. They are formed from stem cells in the bone marrow and Cellular differentiation, differentiated into #Subpopulations, subpopulations of neutrophil-killers and neutrophil-cagers. They are short-lived (between 5 and 135 hours, see ) and highly mobile, as they can enter parts of tissue where other cells/molecules cannot. Neutrophils may be subdivided into segmented neutrophils and banded neutrophils (or Band cell, bands). They form part of the polymorphonuclear cells family (PMNs) together with basophils and eosinophils. The name ''neutrophil'' derives from staining characteristics on hematoxylin and eosin (H&E stain, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Die Radiolarien (Rhizopoda Radiaria) - Eine Monographie (IA Dieradiolarienrh03haec)
Die, as a verb, refers to death, the cessation of life. Die may also refer to: Games * Die, singular of dice, small throwable objects used for producing random numbers Manufacturing * Die (integrated circuit), a rectangular piece of a semiconductor wafer * Die (manufacturing), a material-shaping device * Die (philately) * Coin die, a metallic piece used to strike a coin * Die casting, a material-shaping process ** Sort (typesetting), a cast die for printing * Die cutting (web), process of using a die to shear webs of low-strength materials * Die, a tool used in paper embossing * Tap and die, cutting tools used to create screw threads in solid substances * Tool and die, the occupation of making dies Arts and media Music * ''Die'' (album), the seventh studio album by rapper Necro * Die (musician), Japanese musician, guitarist of the band Dir en grey * DJ Die, British DJ and musician with Reprazent * "DiE", a 2013 single by the Japanese idol group BiS * die!, an inactive Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virchows Archiv
''Virchows Archiv: European Journal of Pathology'' is a monthly peer-reviewed medical journal of all aspects of pathology, especially human pathology. It is published by Springer Science+Business Media and an official publication of the European Society of Pathology. It was established in 1847 by Rudolf Virchow and his friend Benno Reinhardt as the ''Archiv für pathologische Anatomie und Physiologie und für klinische Medicin''. After Virchow's death, it was renamed after him to ''Virchows Archiv für pathologische Anatomie und Physiologie und für klinische Medizin''. The European Society of Pathology adopted it as its official journal in 1999, so that its current name became ''Virchows Archiv: European Journal of Pathology''. Origin and history In 1846, Rudolf Virchow earned his medical license, and succeeded Robert Froriep as prosector at the Charité Hospital in Berlin. In 1847 he became " privatdozent". However, he soon found that his technical manuscripts were const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinnabar
Cinnabar (; ), or cinnabarite (), also known as ''mercurblende'' is the bright scarlet to brick-red form of Mercury sulfide, mercury(II) sulfide (HgS). It is the most common source ore for refining mercury (element), elemental mercury and is the historic source for the brilliant red or scarlet pigment termed vermilion and associated red mercury pigments. Cinnabar generally occurs as a vein-filling mineral associated with volcanic activity and Alkaline earth metal, alkaline hot springs. The mineral resembles quartz in symmetry and it exhibits birefringence. Cinnabar has a mean refractive index near 3.2, a mohs scale of mineral hardness, hardness between 2.0 and 2.5, and a specific gravity of approximately 8.1. The color and properties derive from a structure that is a hexagonal crystalline bravais lattice, lattice belonging to the trigonal crystal system, crystals that sometimes exhibit Crystal twinning, twinning. Cinnabar has been used for its color since antiquity in the Near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystitis
A urinary tract infection (UTI) is an infection that affects a part of the urinary tract. Lower urinary tract infections may involve the bladder (cystitis) or urethra ( urethritis) while upper urinary tract infections affect the kidney (pyelonephritis). Symptoms from a lower urinary tract infection include suprapubic pain, painful urination (dysuria), frequency and urgency of urination despite having an empty bladder. Symptoms of a kidney infection, on the other hand, are more systemic and include fever or flank pain usually in addition to the symptoms of a lower UTI. Rarely, the urine may appear bloody. Symptoms may be vague or non-specific at the extremities of age (i.e. in patients who are very young or old). The most common cause of infection is ''Escherichia coli'', though other bacteria or fungi may sometimes be the cause. Risk factors include female anatomy, sexual intercourse, diabetes, obesity, catheterisation, and family history. Although sexual intercourse is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania Hospital
Pennsylvania Hospital is a Private hospital, private, non-profit, 515-bed teaching hospital located at 800 Spruce Street (Philadelphia), Spruce Street in Center City, Philadelphia, Center City Philadelphia, The hospital was founded on May 11, 1751 by Benjamin Franklin and Thomas Bond (American physician), Thomas Bond. It was the second public hospital in the United States (after only Bellevue Hospital) and had its first surgical amphitheater. and its first medical library. It is part of the University of Pennsylvania Health System. The hospital's main building, dating to 1756, is a National Historic Landmark. History 18th century Pennsylvania Hospital was originally conceived in 1751 by Thomas Bond as an institution "for the reception and cure of the sick poor...free of charge. It was funded by "matching grant" to donations of the people of Philadelphia by a bill, which the House passed unanimously on February 7, 1750. Franklin later wrote that, "I do not remember any of my pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tethys Fimbria
''Tethys fimbria'' is a species of predatory sea slug, a nudibranch, a marine (ocean), marine gastropod mollusk in the family Tethydidae. International Commission on Zoological Nomenclature, ICZN opinion 200 ruled that ''Tethys fimbria'' is a valid name and ''Tethys leporina'' Linnaeus, 1758 is a synonym."''Tethys fimbria'' Linné 1767 " CLEMAM, accessed 29 December 2010. Distribution The distribution of ''Tethys fimbria'' includes the Mediterranean Sea and the east coast of the Atlantic Ocean from Portugal in the north, to the Gulf of Guinea in the south.Description The length of the body of ''Tethys fimbria'' can reach up to . ''Tethys fimbria'' is translucent, b ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indigo
InterGlobe Aviation Limited (d/b/a IndiGo), is an India, Indian airline headquartered in Gurgaon, Haryana, India. It is the largest List of airlines of India, airline in India by passengers carried and fleet size, with a 64.1% domestic market share as of April 2025. It is the List of largest airlines in Asia, second largest Asian airline, and one of the Largest airlines in the world#Passengers carried, largest in the world in terms of passengers carried, with more than 118 million passengers carried in 2025. , IndiGo operates over 2,200 daily flights to 125 destinations – 91 domestic and 34 international. It operates cargo services under its subsidiary, IndiGo CarGo. Its primary hub is at the Indira Gandhi International Airport, Delhi. The airline was established as a private company by Rahul Bhatia of InterGlobe Enterprises—an List of largest companies in India, Indian multinational conglomerate based in Gurugram— and Rakesh Gangwal in 2005. It took delivery of its firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ink
India ink (British English: Indian ink; also Chinese ink) is a simple black or coloured ink once widely used for writing and printing and now more commonly used for drawing and outlining, especially when inking comic books and comic strips. India ink is also used in medical applications. Compared to other inks, such as the iron gall ink previously common in Europe, India ink is noted for its deep, rich black color. It is commonly applied with a paintbrush (such as an ink brush) or a dip pen. In East Asian traditions such as ink wash painting and Chinese calligraphy, India ink is commonly used in a solid form called an inkstick. Composition Basic India ink is composed of a variety of fine soot, known as ''lampblack'', combined with water to form a liquid. No binder material is necessary: the carbon molecules are in colloidal suspension and form a waterproof layer after drying. A binding agent such as gelatin or, more commonly, shellac may be added to make the ink more durable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Nathanael Lieberkühn
Johann Nathanael Lieberkühn (5 September 1711, in Berlin – 7 October 1756, in Berlin) was a German physician. His middle name is sometimes misspelled ''Nathaniel''. Lieberkühn studied theology initially, and then moved to physics, in particular mechanics. It was only after this that he commenced medicine. In 1739 he moved to Leiden, in the Netherlands, and then a year later to London and Paris. Following this he returned to Berlin as a member of the Collegium medico-chirurgicum, the body charged with improving the teaching and science of medicine in the Holy Roman Empire, making mathematical and optical instruments and working as a professor and medical doctor. Besides his physiological work, Lieberkühn was most known for his preparation of medical specimens—these were still presented up to the nineteenth century, especially in Moscow, as masterpieces. His specimens were prepared primarily with injections of wax-containing fluids into body cavities, creating relatively d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skate (fish)
Skates are Chondrichthyes, cartilaginous fish belonging to the family (biology), family Rajidae in the superorder Batoidea of Ray (fish), rays. More than 150 species have been described, in 17 genera. Arhynchobatidae, Softnose skates and Gurgesiellidae, pygmy skates were previously treated as subfamilies of Rajidae (Arhynchobatinae and Gurgesiellinae), but are now considered as distinct families. Alternatively, the name "skate" is used to refer to the entire order of Rajiformes (families Anacanthobatidae, Arhynchobatidae, Gurgesiellidae and Rajidae). Members of Rajidae are distinguished by a stiff snout and a rostrum (anatomy), rostrum that is not reduced. Taxonomy and systematics Evolution Skates belong to the ancient lineage of cartilaginous fishes. Fossil Dermal denticle, denticles (tooth-like scales in the skin) resembling those of today's chondrichthyans date at least as far back as the Ordovician, with the oldest unambiguous fossils of cartilaginous fish dating from the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amoeboid Movement
Amoeboid movement is the most typical mode of locomotion in adherent eukaryotic cells. It is a crawling-like type of movement accomplished by protrusion of cytoplasm of the cell involving the formation of pseudopodia ("false-feet") and posterior uropods. One or more pseudopodia may be produced at a time depending on the organism, but all amoeboid movement is characterized by the movement of organisms with an amorphous form that possess no set motility structures. Movement occurs when the cytoplasm slides and forms a pseudopodium in front to pull the cell forward. Some examples of organisms that exhibit this type of locomotion are amoebae (such as ''Amoeba proteus'' and '' Naegleria gruberi'',) and slime molds, as well as some cells in humans such as leukocytes. Sarcomas, or cancers arising from connective tissue cells, are particularly adept at amoeboid movement, thus leading to their high rate of metastasis. This type of movement has been linked to changes in action potential ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
