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Principal components analysis (PCA) of genetic structure among herds;Cytokine production over time by multi-locus genotype from Risk alleles for tuberculosis infection associate with reduced immune reactivity in a wild mammalian host

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posted on 2019-06-28, 07:41 authored by Hannah F. Tavalire, Eileen G. Hoal, Nikki le Roex, Paul D. van Helden, Vanessa O. Ezenwa, Anna E. Jolles
Each panel shows individuals plotted by sequential combinations of the first five principle components, color-coded by sample herd. Here we see no obvious clustering based on herd membership. The eigenvalues of the first twenty principle components are plotted as an inset in the top left panel with the first five PCs highlighted in red. We see the decrease in eigenvalue levels off after principle component five.;Animals heterozygous or homozygous for the ‘G’ risk allele (red or violet) produce 45% less IL-12 than CC animals following pokeweed mitogen stimulation of whole blood (top panel). IL-12 production was not significantly associated with variation at SNP3195. Additionally, we observed no detectable difference in interferon gamma (INFγ) or interleukin 4 (IL-4) production relative to SNP2253 and SNP3195 genotype in this herd.

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    Proceedings of the Royal Society B: Biological Sciences

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