Abstract
Serum levels of immunoglobulins G, A, M, and E (IgG, IgA, IgM, and IgE, respectively); allergenspecific IgE antibodies; and interleukin-4 (IL-4) were measured in ten cosmonauts before and after flights of 7–11 days on the International Space Station. These relatively short spaceflights did not cause any significant changes in the parameters tested. No linear correlation was found between the serum levels of total IgE and IL-4 for either the pre-or the postflight period.
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