Gene expression patterns of zebrafish khdrbs1a and khdrbs1b genes during early development detected by WISH. Stages of embryonic development: 0.45 hpf (A,A′), 3 hpf (B,B′), 6 hpf (C,C′), 10 hpf (D,D′), 14 hpf (E,E′), 24 hpf (F–I, F′–I′), 48 hpf (J–M, J′–M′), and 72 hpf (N–Q, N′–Q′). Expression sites are labeled with abbreviation as follows. cf, caudal fin; e, eye; gp, gonad primordium; hb, hindbrain; lln, lateral line neuromast; llp, lateral line primordium; mb, midbrain; ov, otic vesicle; pa, pharyngeal arch; pd, pronephric ducts; pt, pectoral fin; sp, spinal cord.