How many letters does the top answer for “an enzyme that occurs in gastric juice; causes milk to coagulate” have?

The most common answer is chymosin (8 letters).

Crossword clue: an enzyme that occurs in gastric juice; causes milk to coagulate

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

chymosin 8 letters wn-def

an enzyme that occurs in gastric juice; causes milk to coagulate

rennin 6 letters wn-def

an enzyme that occurs in gastric juice; causes milk to coagulate