Cardiovascular System

Gross pathology of atherosclerosis, aorta. Gross pathology of rheumatic heart disease. Multiple Rickettsia tsutsugamushi free within the cytoplasm of a mouse brain capillary endothelial cell. Multiple Rickettsia tsutsugamushi free within the cytoplasm of a mouse brain capillary endothelial cell. Single Rickettsia tsutsugamushi free within the cytoplasm of a mouse brain capillary endothelial cell. Thrombus due to infection with Rickettsia tsutsugamushi, mouse brain capillary. Thrombus due to infection with Rickettsia tsutsugamushi, mouse brain capillary. Normal mouse brain capillary. The onset of this aortic aneurysm occurred during the tertiary stage of syphilis. This photograph shows a patient having his blood pressure read by a public health practitioner.