Multifactor analysis of the lomefloxacin effect on the primary immune response to T-independent bacterial antigen (vaccine EV fraction 1) and to T-dependent cellular antigen (SRBC) in mice was performed with the use of a wide range of the antibiotic concentrations and the dosage time. It was shown that lomefloxacin in the doses corresponding to the average therapeutic ones used for 3-9 days had no effect on the content of the IgG antibodies, was able to increase the level of the IgM antibodies and insignificantly lowered the concentration of the IgA antibodies.
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