PMC3653548_01
Microscopic (eight-silver; 1000 x ) amniotic epithelium, showing silver-positive intracellular bacteria, staining by Grocott's method (silver impregnation).
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FI01003-1
The amnion also presented necrosis and gram-positive and silver-positive intracellular bacteria were seen (Grocott's method, Fig. 1), histological findings typical of L monocytogenes infection.