histology[tiab] OR pregnan*[tiab] OR sperma*[tiab] OR semen[tiab] OR ((testis[tiab] OR testes[tiab] OR testic*[tiab]) AND (volume[tiab] OR biops*[tiab] OR biopt[tiab])) OR fertil*[tiab] OR infertil*[tiab] OR subfertilit*[tiab] OR paternity[tiab] OR fsh[tiab] OR ("follicle stimulating hormone"[tiab]) OR ("luteinizing hormone"[tiab]) OR testosterone[tiab] OR antibodies[tiab] OR antibody[tiab] OR "Fertility"[Mesh] OR "Infertility, Male"[Mesh] OR "Pregnancy"[Mesh] OR "Semen"[Mesh] OR "Spermatozoa"[Mesh] OR "Semen Analysis"[Mesh] OR "Spermatogenesis"[Mesh] OR ("Testis"[Mesh] AND "Biopsy"[Mesh]) OR "Histology"[Mesh] OR "anatomy and histology "[Subheading] OR "Paternity"[Mesh]