Fig. 4.
Identification of mi protein in mast cells. MC-9 cells were labeled with [35S]-methionine. mi was identified by preincubating the antibody with or without the mi peptide before the addition of the antibody to the cell lysates (A). Immunoprecipitates of [35S]-methionine–labeled mi from either MC-9, spleen, or liver cells are shown in (B). Immunoprecipitates of [35S]-methionine–labeled mi from either BMMC or BM cells are shown in (C). Immunoprecipitates were analyzed by SDS-PAGE. One representative experiment of two performed is shown.