<p>Lane 1: Molecular mass marker; Lane 2, 3: SDS-PAGE of FG and HINAE cell membrane protein, stained with coomassie bule; Lane 4, 5: SDS-PAGE of FG and HINAE cell cytoplasm protein, stained with coomassie bule; Lane 6, 7: reaction with anti-27.8R MAbs showed only one 27.8 kDa in FG and HINAE cell membrane protein; Lane 8, 9: reaction with anti-27.8R MAbs showed no band in FG and HINAE cell cytoplasm protein; Lane 10, 11: anti-WSSV MAb 1D5 instead of anti-27.8R MAbs served as negative controls.</p