Avian Thyroid: Effect of p,p'-DDT on Size and Activity

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Science  05 Dec 1969:
Vol. 166, Issue 3910, pp. 1278-1280
DOI: 10.1126/science.166.3910.1278


Feeding sublethal amounts of p,p'-DDT to pigeons caused an increase in thyroid weight and a reduction in colloid content of the follicles. This may reflect a hyper- or hypo-functioning gland and may be cotnnected with recent reductions in egg shell weights in wild birds. The effect was accompanied by increased liver weight.

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