P3R1O1N1E1P3H4R1O1I1
17 points
PRONEPHROI is validvalid
PRONEPHROS, a rudimentary vertebrate kidney [n]
PRONEPHROS, a primitive kidney that disappears early in embryonic development [n]
PRONEPHROS, a rudimentary vertebrate kidney [n]
PRONEPHROS, a primitive kidney that disappears early in embryonic development [n]