Gene 4930548B21Rik|Spdy1|speedy/ringo|speedy A2|speedy A1|4921517J08Rik http://identifiers.org/mgd/MGI:1918141 genetic mapping Spdy1 protein coding gene speedy/ringo speedy/RINGO cell cycle regulator family, member A 4930548B21Rik MGI:1918141 Spdya + 4921517J08Rik speedy A1 speedy A2 O