Changes in the histology of the adrenal zona glomerulosa after developmental exposure to low doses of o,p’-DDT. Histology of the zona glomerulosa (ZG) of the control rats (A) and DDT-exposed rats (B) in pubertal period (PND42), of the control rats (C) and DDT-exposed rats (D) after puberty (PND70). Arrowheads point to microcirculatory vessels obturated red blood cells with, arrows–picnotic nuclei. Scale bar 20 µm. (E) Surface area of the zona glomerulosa. (F) Size of the glomerulosa cell. Data are shown as mean ± S.E.M. PND, day of postnatal development; p < 0.05 compared to the control (*), compared to PND42 (#).