Abstract

The larval serum proteins (LSPs) from fifteen Drosophila species were analysed on sodium dodecyl sulphate (SDS) polyacrylamide gels and on non-denaturing polyacrylamide gels. The LSPs were identified immunologically after transfer of the proteins from the gels to nitrocellulose filters. All species possessed LSP-2 and LSP-1 γ-like proteins and in addition have at least one other LSP-1-like protein. These results are discussed in the light of studies using nucleic acid hydridization to detect LSP sequences in these species.

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