Caption: The human thyroid gland.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 13.16 MB

Caption: Diagram showing the exterior and a cross-section of the human heart
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 11.44 MB

Caption: Conceptual illustration of a heart attack (coronary occlusion).
Artist: Phototake Illustration
Release: Not Applicable
File Size: 62.53 MB