Immunogenicity of methyl esters of nocardomycolic acids.

Immunogenicity of methyl esters of fatty acids of nocardiae (Nocardia (Nocardia asteroides ATCC 19247, N, brasiliensis N318 and N. caviae N231) was studied. The rabbit antisera obtained against the lipid fractions reacted in the complement fixation test (CF) and in the pash sive cutaneous anaphylaxis test (PCA). The results of absorption experiments witt separated fractions of fatty acids esters indicate that the antisera showed activity againsmethyl esters of nocardomycolic acids.