كيف تعمل الاذن

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Anemia

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definition   :  a condition in which there is a deficiency of red cells or of haemoglobin in the blood, resulting in pallor and weariness symptome : Easy fatigue and loss of energy. Unusually rapid heart beat, particularly with exercise. Shortness of breath and headache, particularly with exercise. Difficulty concentrating. Dizziness. Pale skin. Leg cramps. inominua                                                                                                                              causes : iron deficiency b12 deficiency and folate deficiency decrese blood cell production  blood loss red blood cell destruction ( extra and intra hemolys...
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definition :  ( CD20 ) antibody mediated which is the function of B-cells , it is converted into plasma cells taht produce antibody IgA IgM IgG IgD IgE . IgA : surface antibody attack bacteria on the body surface like GI lumen respiratory lumen IgM : the largest and first one produced in responce to bacteria means acute infection . IgG : the smallest , only that cross the placenta , remains in serum as memory for old infection . IgE : responsible fpr allergy stimulate mast cells to release histamine . IgD : least important deficiency in humoral immunity increase risk of infection mainly bacteria ( encapsulated ) 
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