<prompt> A 34-year-old lady presents with high grade fever with chills and rigors. On examination a firm spleen is felt 3 cm below costal margin with right upper quadrant tenderness. Peripheral smear was prepared. Diagnosis is?Plasmodium vivaxPlasmodium falciparumAmoebic liver abscessInfectious mononucleosis  <response>: Ans. b Plasmodium falciparum. Notice the rings inside RBCs with delicate cytoplasm and one or two small chromatin dots. The RBCs that are infected are not enlarged and there is multiple infection of RBC which is diagnostic of P. falciparum infection. Occasional applique forms rings appearing on the periphery of the RBC can he present. P. falciparum gametocytes are crescent or sausage shaped See middle of image. The chromatin is in a single Mass macrogamete or diffuse microgameteImage source - stylefont-family: Times New Roman, Times, serif 