How many letters does the top answer for “a virus that is parasitic (reproduces itself) in bacteria” have?

The most common answer is bacteriophage (13 letters).

Crossword clue: a virus that is parasitic (reproduces itself) in bacteria

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

bacteriophage 13 letters wn-def

a virus that is parasitic (reproduces itself) in bacteria

phage 5 letters wn-def

a virus that is parasitic (reproduces itself) in bacteria