Fimbriae of a fallopian tube, light micrograph. Fimbriae are the folds at the opening (ostium) of a fallopian tube, next to an ovary. They help to guide a newly-released ovum (egg cell) into the tube itself. One fallopian tube runs from each ovary into the uterus (womb). Ova travel down the tubes into the uterus. Dark field illumination. Blood vessels can be seen within the fimbriae. Magnification: x20 when printed 15cm wide.