gonad | embryonic stage (with thr34.52)
gonadal sheath proper primordium | embryonic stage (with thr34.52)
visceral mesoderm | embryonic stage (with thr34.52)
thr15.54/thr34.52 embryos have fragmented gonads with loosely gathered somatic gonadal precursors. Somatic gonadal precursor specification is abnormal.