Binding patterns of MAbs against recombinant protein fragments representing POMP90, expressed as GST fusion proteins (see Table 2). Purified fragments rOMP90-1 to -7 and rOMP90-9 to -11 were subjected to SDS-12% PAGE and immunoblotted with MAbs FC1A2, 73/04, G11, 84/019, and 73/0040, with affinity-purified antibodies to POMP105kDa, and with a pool of postabortion ewe sera.