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Nurse bees tending to brood in cells both open and capped with beeswax.
A speculum used to hold the vagina open in order to visualize the cervix.
Chest X-ray. A physician is examining chest X-rays with the aid of a plastic model of the bronchial
Manager's Responsibilities to Employee and Physician-Employer
A series of two PET scans. A scan was done when the volunteer’s eyes were either open (left) or ...
ELEMENTS OF ARCHITECTURE: The Greek Orders