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Fig. 1. C. elegans germline. The right arm of the gonad shows germ
cell development. The left arm of the gonad delineates the distal, medial and
proximal regions, as referred to in the text. Fertilized embryos are present
in the uterus. Orange, proliferation; blue, meiotic prophase I; yellow,
maturing oocytes; red, sperm; brackets, region in which EFL-1 protein is
detectably expressed.