SDS-PAGE patterns of axonemal proteins from ODAL1-RNAi cells. The compositions of axonemal proteins from control (lane a), ODAL1-RNAi (1 day after the induction of gene silencing) (lane b), and ODAL1-RNAi (2 days after the induction of gene silencing) (lane c) cells were analyzed by SDS-PAGE as described in Materials and Methods. Open circles, outer dynein arm HCs; asterisks, an unidentified HC; M, Mr of markers (×103).