261. [A patient is being assisted while walking shortly after eye surgery] Subject(s): BandagesPatientsWorld Health Organization
262. The surgical instrument used here for a cataract operation ... is known as a cryoprobe Subject(s): OphthalmologySurgical InstrumentsCataract ExtractionWorld Health Organization
263. ... the injection of a contrast medium (usually iodine compound) via a flexible tube Subject(s): Cardiovascular DiseasesWorld Health Organization
264. [Miniature transmitter used to monitor heartbeats] Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
265. The sound of the dog's heartbeats is picked up by a microphone stuck to his fur Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
266. The passage of the dye through the blood vessels is recorded by two small photo-electric cells Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
267. Congenital malformations of the heart originate in the embryo Subject(s): Cardiovascular DiseasesWorld Health Organization
268. Dr. [Zdenek] Rychter produces his own tools for his very delicate operations Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
269. ... micro x-ray photographs of a chick embryo heart from 3rd to 11th day Subject(s): World Health Organization
270. ... studying blood circulation in the new-born Subject(s): Cardiovascular DiseasesWorld Health Organization