title: A non-fertilized human ovum in a hydrosalpinx fluid aspirate.
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D001826:Body Fluids / Q000166:cytology*; D005187:Fallopian Tubes; D005260:Female; D006801:Humans; D010063:Ovum / Q000648:ultrastructure*; D011247:Pregnancy