Assertion: mature testis | /r/HasProperty | contained spermatogonia
Facets:
value: mainly
type: DEGREE
Source sentences:
text: During the summer breeding months, the male gonad was characterized by dense spermatocysts of all developmental stages (e.g., Figure 3D); while during the winter non-breeding months the mature male testis contained mainly spermatogonia, residual spermatozoa, and some primary spermatocytes (Figure 3E).