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The effects of naturally seasonal alterations on the immuno-responses of hamsters. WS-2015: winter solstice of 2015; SS-2016: summer solstice of 2016. A, B and C: the levels of IgG, IgM and TNFα, respectively; D, E and F: the levels of IL1, 6 and 10, respectively; G, H and I: the numbers of CD3, 4 and 8, respectively. The data were expressed as means ± SDs of 16 hamsters each group. * Significant difference vs. SS-2016.
