|Structure in the testis formed by cytoplasmic projections of one or two Sertoli cells that surround a single spermatogonium. Sperm production occurs with in the cyst and the spermatogonium divides to generate approximately 1300 mature sperm. A given Sertoli cell is in contact with only one germ cell clone.
|Adult (90d-730d, breeding adult)
|Anatomy Ontology [ZFA:0005882]
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