On the infra specific variations in the frequency of supernumerary testes in Schistosoma mansoni.
D000818:Animals; D004534:Egypt; D005243:Feces / Q000469:parasitology; D014644:Genetic Variation; D006801:Humans; D008297:Male; D009115:Muridae; D012376:Rodent Diseases / Q000469:parasitology*; D012550:Schistosoma mansoni / Q000033:anatomy & histology*; D012552:Schistosomiasis / Q000469:parasitology* / Q000662:veterinary; D013045:Species Specificity; D013737:Testis / Q000033:anatomy & histology