摘要 |
An antigenic composition purified from normal human serum or the culture medium of human non-small cell lung carcinoma cells comprising a non-denatured glycosylated Form I L3 protein, said protein having the following N-terminal amino acid sequence : <IMAGE> a molecular weight of about 94,000 daltons as determined by SDS polyacrylamide gel electrophoresis under reducing conditions, and N-linked glycoside residues in which the terminal residues of the N-linked glycoside residues are sialic acid residues. |