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Photomicrograph of brain tissue sections from infected animals treated with propolis group (G3) showing (A) vascular congestion (arrowheads), mild astroglia cell reaction (thin arrows). (B) Capillary congestion with peri-capillary edema (red arrowheads), most of nerve cell appear normal (arrows), with some degenerated neurons (yellow arrowheads). Hx&E stain, the bar size was indicated under pictures.
