Close up: A Black male doctor in a blue uniform with a green felt-tip pen in his hand gives a medical lecture and addresses his assistant, a female nurse in a white uniform, who stands behind him in a spacious room with white brick walls

doctor lecture medical close-up male blue uniform green pen assistant female nurse white spacious room brick walls healthcare education teamwork diversity ethnicity profession communication discussion teaching mentorship training hospital clinic expertise collaboration trust knowledge leadership learning interaction presentation diverse environment mentor