title: Further evidence of inherent testicular rhythms in the laboratory rat.
mesh_terms: D000818:Animals; D001699:Biometry; D008297:Male; D010507:Periodicity; D011863:Radioimmunoassay; D051381:Rats; D013094:Spermatozoa; D013737:Testis / Q000033:anatomy & histology* / Q000098:blood supply; D013739:Testosterone / Q000097:blood*; D014316:Tritium; D014680:Veins
chemical_list: D014316:Tritium; D013739:Testosterone