allotype

[al-uh-tahyp]
noun
1.
Biology. a type specimen of the sex opposite to that of the holotype.
2.
Immunology. an antibody of a given class having certain molecular sites shared by only some members of a species and therefore acting as an antigen to other members of the same species.

Origin:
1915–20; allo- + type; in immunological sense, probably back formation from allotypy < French allotypie, coined in 1956

allotypic [al-uh-tip-ik] , adjective
allotypically, adverb
allotypy [al-uh-tahy-pee] , noun
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World English Dictionary
allotype (ˈæləˌtaɪp)
 
n
1.  biology an additional type specimen selected because of differences from the original type specimen, such as opposite sex or morphological details
2.  immunol any of the variant forms of a particular immunoglobulin found among members of the same species

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American Heritage
Medical Dictionary

allotype al·lo·type (āl'ə-tīp')
n.
Any of the genetically determined antigenic differences within a given class of immunoglobulin that occur among members of the same species.


al'lo·typ'ic (-tĭp'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
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Example sentences
The original description refers only to an allotype and compares paratypes to it, but does not mention a holotype.
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