Engrailed
Engrailed may refer to: * ''engrailed'' (gene), a developmental gene in many animals *Engrailed (moth), ''Ectropis crepuscularia'', a moth *Engrailed (heraldry), a term indicating curves pointing inwards (and points pointing outwards) in heraldry *Engrailed arch, in architecture, an arch with cusps, as in a trefoil arch A trefoil arch, or three-foiled cusped arch, is an arch incorporating the shape or outline of a trefoil – three overlapping circles. It has been widely used for its symbolic significance in Christian architecture. Trefoil arches are common in G ...

Engrailed (gene)
''engrailed'' is a homeodomain transcription factor involved in many aspects of multicellular development. First known for its role in arthropod embryological development, working in consort with the Hox genes, ''engrailed'' has been found to be important in other areas of development. It has been identified in many bilaterians, including the arthropods, vertebrates, echinoderms, molluscs, nematodes, brachiopods, and polychaetes. It acts as a "selector" gene, conferring a specific identity to defined areas of the body, and co-ordinating the expression of downstream genes. Protein ''engrailed (en)'' encodes the homeodomain-containing transcription factor protein Engrailed. Homologous Engrailed proteins are found in a diversity of organisms. When expressed in the ectoderm, ''engrailed'' is involved in the production of skeletal material. ''engrailed'', or genes with very similar sequences, are found in all bilaterian animals. ''engrailed'' plays a number of crucial roles in ...
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Engrailed (heraldry)
The lines of partition used to divide and vary fields and charges in heraldry are by default straight, but may have many different shapes. Care must sometimes be taken to distinguish these types of lines from the extremely unusual and non-traditional use of lines as charges, and to distinguish these shapes from actual charges, such as "a mount r triple mountin base," or, particularly in German heraldry, different kinds of embattled from castle walls. In Scotland, varied lines of partition are often used to modify a bordure (or sometimes another ordinary) to difference the arms of a cadet from the chief of the house. Indented and dancetty An ordinary ''indented'' is bounded by small zigzags like a triangle wave or the teeth of a saw, with peaks on one side matching peaks on the other. An ordinary ''dancetty'' is similar, but with peaks matching troughs, so that the width is constant; it also typically has fewer points than ''indented''. In early armory these were not distingu ...
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Engrailed (moth)
The engrailed and small engrailed (''Ectropis crepuscularia'') are moths of the family Geometridae found from the British Isles through central and eastern Europe to the Russian Far East and Kazakhstan. The western Mediterranean and Asia Minor and the Caucasus represent the southern limit of the distribution (with the Balkan countries). In the north, the distribution area ends at the Arctic Circle. It also occurs in North America. Debate exists as to whether they make up one species, or whether ''E. crepuscularia'' actually refers only to the small engrailed, with the engrailed proper being separable as ''E. bistortata''. The ground colour of the wings is buff or grey, variably marked with darker fascia and a pale postdiscal crossline. The darker markings are not usually as strong as in the rather similar willow beauty. Melanic forms occur fairly frequently. The wingspan is . One or two broods are produced each year. In the British Isles, the adults can be seen at any time be ...
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