SI aoork)) aTOTAL LEUKOCYTES SL. O——O" : CELLS * 107 3b er APPEARANCE OF — tora NEUTROPHIL ES——=N oF NSN NIL é NH| — pS, 200 cC ~ ZL Se eel Oo Ls YX 5 SYMPTOMS r A —t—— PLATELETS & x _f 180 100 A Yo—~ ‘A 0 5 10 15 20 25 30 35 40 POST EXPOSURE DAY Figure 2.1—Course of leukocytes and platelets count changes ina tico year old boy who developed a severe respiratory infection. 45 50 55 NOILLVIGVH ONIZINOI dO SLOdAAA P“Po c — oO \ AT