The influence of decoction invigorating yang for recuperation on blood-brain barrier and cell ultraatructure of white rats with a- cute cerebral edema caused by pertussis vaccine was observed. The results showed that this herbal decoction can markedly decrease the Evan's blue content of brain tissue protein, the blue-dyed range and extent of brain tissue, as well as the transport of pinosome in cere- brocapillary endothelial cell, and lightly reduce swelling of mito- chondria in astrocyte and neurones around the capillary of left cere- bral cortex. The water content in brain tissue of the righ...