The process of hair turning grey is usually caused by:
A. the natural aging process
B. hair damaged at the papilla
C. hair fiber over 15 years in age
D. being exposed to excessive sunlight
Select your answer:
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Pharmacology › ViewThe LD 50/ED 50 is the mathematical expression of what value?
A. the leathal dose
B. the effective dose
C. the margin of safety
D. the mortality dose
Respiratory › View
Which of the body produces thick and sticky mucus that can clog the lungs and obstruct the pancreas?
A. Cystic Fibrosis
B. Sarcoidosis
C. Pleural Effusion
D. Pneumothorax