Figure 1 (A) Photomicrograph shows morphology of sickle red blood cells (SS-RBCs) in a positive control slide. Mag.X400. The micrograph illustrates numerous abnormal shape of red cells (white arrows) after treatment with a reducing agent (2% Na2S2O4) in normal saline at the end of 120 mins. The blue arrows point toward classical biconcave disks of normal red cells. (B) Photomicrograph shows effect of MPF-extract on SS-RBC morphology. Mag.X400. It shows how pretreatment of SS-RBCs with MPF/normal saline dilution inhibited sickling of RBCs on exposure to low oxygen tension milieu (after induction with 2% Na2S2O4).The micrograph reveals more of classical biconcave disks of normal red cells and cells with central parlor (blue arrows) as against the abnormal sickle cells (white arrows).