Cienkowski

Lev Semyonovich Tsenkovsky (Leon Cienkowski, russian: Лев Семенович Ценковский) (October 1 ( N.S. October 13), 1822 in

Warsaw Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officia ...

– September 25 (N.S. October 7), 1887 in

Leipzig Leipzig ( , ; Upper Saxon: ) is the most populous city in the German state of Saxony. Leipzig's population of 605,407 inhabitants (1.1 million in the larger urban zone) as of 2021 places the city as Germany's eighth most populous, as ...

) was a Polish botanist,

protozoologist Protozoology is the study of protozoa, the "animal-like" (i.e., motile and heterotrophic) protists. The Protozoa are considered to be a subkingdom of Protista. They are free-living organisms that are found in almost every habitat. All humans have pr ...

bacteriologist A bacteriologist is a microbiologist, or similarly trained professional, in bacteriology -- a subdivision of microbiology that studies bacteria, typically pathogenic ones. Bacteriologists are interested in studying and learning about bacteria, ...

, who was mostly active in

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

, then part of the

Russian Empire The Russian Empire was an empire and the final period of the Russian monarchy from 1721 to 1917, ruling across large parts of Eurasia. It succeeded the Tsardom of Russia following the Treaty of Nystad, which ended the Great Northern War. ...

. He was a corresponding member of the Saint Petersburg Academy of Sciences (1881). Lev Tsenkovsky graduated from

Saint Petersburg University Saint Petersburg State University (SPBU; russian: Санкт-Петербургский государственный университет) is a public research university in Saint Petersburg, Russia. Founded in 1724 by a decree of Peter the G ...

in 1844. As a professor, he taught at the

Demidov Lyceum The Yaroslavl Demidov State University ( Russian: ''Ярославский государственный университет имени П. Г. Демидова'') is an institution of higher education in Yaroslavl, Russia. In 1918, Yarosla ...

Yaroslavl Yaroslavl ( rus, Ярослáвль, p=jɪrɐˈsɫavlʲ) is a city and the administrative center of Yaroslavl Oblast, Russia, located northeast of Moscow. The historic part of the city is a World Heritage Site, and is located at the confluenc ...

(1850-1854), Saint Petersburg University,

Novorossiysk University Odesa I. I. Mechnykov National University ( uk, Одеський національний університет Iмені І. І. Мечникова, translit=Odeskyi natsionalnyi universytet imeni I. I. Mechnykova), located in Odesa, Ukraine, i ...

in Odessa (1865-1871), and Kharkov University (1872-1887). Lev Tsenkovsky was one of the pioneers of the

ontogenetic Ontogeny (also ontogenesis) is the origination and development of an organism (both physical and psychological, e.g., moral development), usually from the time of fertilization of the egg to adult. The term can also be used to refer to the st ...

method of studying lower plants and lower animals. Also, he was developing a concept on genetic unity of

flora Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' ...

and

fauna Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is ''funga''. Flora, fauna, funga and other forms of life are collectively referred to as ''Biota (ecology ...

. Tsenkovsky was one of the advocates of the teachings of

Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended ...

. He is known to have suggested methods of developing an effective

anthrax vaccine Anthrax vaccines are vaccines to prevent the livestock and human disease anthrax, caused by the bacterium ''Bacillus anthracis''. They have had a prominent place in the history of medicine, from Pasteur's pioneering 19th-century work with cattle ...

. Lev Tsenkovsky contributed to the organization of the first

vaccination Vaccination is the administration of a vaccine to help the immune system develop immunity from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism. In stimulating ...

station in

Kharkov Kharkiv ( uk, Ха́рків, ), also known as Kharkov (russian: Харькoв, ), is the second-largest city and municipality in Ukraine.

in 1887. 1822 births 1887 deaths 19th-century Polish botanists Botanists from the Russian Empire Corresponding members of the Saint Petersburg Academy of Sciences Saint Petersburg State University alumni {{Russia-scientist-stub