Copulatory organ musculature in Childia (Acoela) as revealed by phalloidin fluorescence and confocal microscopy
Keywords: bs; bursa; bw; body-wall muscles; c; sperm canal; cm; circular muscles surrounding the male opening; fo; female opening; im; inner muscles; m; muscles; mm; mesh of thin muscles; mo; male opening; rm; muscles radiating to the body-wall; sa; sperm aggregati