Relating to or of the nature of allotypes; describing genetic variants of proteins that differ between individuals.
From allotype plus -ic suffix (forming adjectives). Built on Greek 'allo-' (other) and 'typos' (type), with the standard adjectival ending -ic.
The term 'allotypic variation' explains why identical twins have identical immune systems but you and your siblings have different immune responses to the same virus—your allotypic makeup is mostly genetic and unique to you.
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