Sentence:  Since different individuals of the same species may have different <WSD>allotypes</WSD>, these determinants can be used as genetic markers. / The most common technique used for <WSD>allotype</WSD> determination is hemagglutination-inhibition. 
Meaning of the word marked with <WSD> tags:  An immunoglobulin allotype; the allele of the antibody chains found in an individual.