Fibroadenomas of the breast with prominent smooth muscle.
D000232:Adenofibroma / Q000648:ultrastructure*; D000328:Adult; D001943:Breast Neoplasms / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009130:Muscle, Smooth / Q000648:ultrastructure; D009379:Neoplasms, Muscle Tissue / Q000648:ultrastructure*