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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Front Neuroendocrinol. 2014 Oct 27;37:76–88. doi: 10.1016/j.yfrne.2014.10.002

Figure 2. Gonadal hormone-dependent and -independent effects of photoperiod on immunity in hamsters.

Figure 2

Effects of gonadectomy on the magnitude of the effect of photoperiod on several measures of immunity in male Siberian hamsters. TOTAL LYMPH = blood lymphocyte concentrations; DTH = peak delayed type hypersensitivity skin inflammatory responses; BODY (LPS) = peak decreases in body mass in response to LPS treatment; FOOD (LPS) = peak decreases in food intake in response to LPS treatment; NEST (LPS) = acute suppression of nest building behavior in response to LPS treatment. Adapted from Prendergast et al. (2008). Effect sizes are estimated using the omega square statistic which provides an estimate of the total dependent variance that can be accounted for by the independent variable in a given experimental population.