Crossword clue: an antibody that occurs naturally against foreign tissues from a person of the same species

The most common answer is alloantibody (12 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

alloantibody 12 letters wn-def

an antibody that occurs naturally against foreign tissues from a person of the same species

isoantibody 11 letters wn-def

an antibody that occurs naturally against foreign tissues from a person of the same species