Labels:box | bulletin board | cell | clock | crt screen | door | earth | food | hakham | poster | sky OCR: BODY EFENCES 'VERY DAY the body has to defend organ ism S. Second, special types of itself against attack by harmful white blood cells, called lymphocy tes bacteria and viruses. It doep this in two produce chemicals called antibodies in ways. First. W hite blood cells travel response tc bacteria and viruses The through the body tissues, constantly antibodies attach themselves to their hunting and destroying invading surfaces and make them harm ess. Red blood cells Antibodies attacking Plasma bacteria Bacteria Lining of a blood vessel White blood Tissue layer cell engulfing Made up of bacteria single cells DEFENCES does harmless
