Assertion: testis's germ cell | /r/HasProperty | attracted by a chemical signal
Facets:
value: possibly
type: OTHER
Source sentences:
text: — peritubular cells are attracted into the gonad from outside by a sex-specific chemical signal; germ cells enter the gonad from outside, possibly attracted by a chemical signal that is not sex-specific; and the origin of the Sertoli cells is unclear.