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The pulmonary vasculature is normal. There is no thickening of the small muscular arteries or intimal hyperplasia to suggest pulmonary hypertension. | The pulmonary vasculature is normal. There is no thickening of the small muscular arteries or intimal hyperplasia to suggest pulmonary hypertension. | ||
Specials stains (Gram, ZN, PAS, PASD, GMS) are negative for micro-organisms. Immunohistochemical stains for Adenovirus, RSV, and CMV are all negative. Immunohistochemical stains for CD3, CD4, CD8 and CD20 show that the lymphocytes are predominantly B cells and that there are more CD4 T cells than CD8 T cells. | Specials stains (Gram, ZN, PAS, PASD, GMS) are negative for micro-organisms. Immunohistochemical stains for Adenovirus, RSV, and CMV are all negative. Immunohistochemical stains for CD3, CD4, CD8 and CD20 show that the lymphocytes are predominantly B cells and that there are more CD4 T cells than CD8 T cells. Normal neuroepithelial bodies are identified with immunostains for chromogranin A, synaptic vesicle 2 and serotonin. | ||
B, C. The sections show lymph nodes with a moth-like appearance, that have abundant histiocytes in the sinuses and secondary follicles. Specials stains (Gram, ZN, PAS, PASD, GMS) are negative for micro-organisms. | B, C. The sections show lymph nodes with a moth-like appearance, that have abundant histiocytes in the sinuses and secondary follicles. Specials stains (Gram, ZN, PAS, PASD, GMS) are negative for micro-organisms. |
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