Any duplicate (part of a single gathering made by a collector at one time) of the holotype: it is always a specimen (ICBN Art. 7). Comment: No restriction is stated on citation, so assumedly isotypes may be uncited duplicates of the holotype, and as such, the term overlaps MEROTYPE. Application of isotype to exsiccati distributions is difficult, but the parenthetical restriction is helpful.

a specimen which is a duplicate of the holotype, i.e. part of the same collection. cf. type. Back to Glossary Index J-K

(ICBN) a duplicate of the holotype (i.e. part of a single gathering made by a collector at one time)

In graphic design and sociology, Isotype (possibly an acronym for International System of Typographic Picture Education) is a system of pictograms designed by the Austrian educator and philosopher Otto Neurath and the illustrator Gerd Arntz to communicate information in a simple, non-linguistic way. Neurath originally intended Isotype to be used by educators of young children, but it wound up instead heavily influencing modern public signage and information graphics. Visually, it owes a lot to a clean-lines, 1920s realist/deco aesthetic.

The class of an antibody (e.g. IgG, IgA, IgM), which depends on the type of its heavy chain.

Refers to genetic variation within a family of proteins or peptides such that every member of the species will have each isotype of the family represented in its genome (e.g. immunoglobulin classes).

An antigenic determinant that distinguishes the constant regions of the different heavy-chain classes and light-chain types.

Synonym of isomorph.