title: The "blood-testis" barrier in a nematode and a fish: a generalizable concept.
mesh_terms: D000818:Animals; D001814:Blood-Testis Barrier; D004153:Dipetalonema / Q000502:physiology* / Q000648:ultrastructure; D005399:Fishes / Q000033:anatomy & histology / Q000502:physiology*; D008297:Male; D010539:Permeability; D013091:Spermatogenesis; D013737:Testis / Q000502:physiology / Q000648:ultrastructure