sample tissue condition fpkm ERR023143 swim bladder normal 0.08493099999999999 ERR023146 head kidney normal 0.0635029 ERR594417 retina normal 0.0599053 SRR1562533 testis normal 0.0527383 SRR658533 bud normal 0.0404018 ERR594416 retina transgenic flk1 0.0290048