A, Lysates from uninfected RBC (U), trophozoite-stage infected RBC (I) or saponin isolated parasites (P) were extracted with RIPA buffer and probed with antibodies against human TRiC subunits i) α, ii) β, iii) δ, iv) ζ and v) θ. PfEF-1α is a cytosolic parasite protein. B, Uninfected (uRBC) or infected (iRBC) RBC samples (T = total sample) were treated with 0.05 % saponin (20 s, room temperature), releasing the soluble contents of the RBC and parasitophorous vacuole (SN = supernatant fraction), leaving the insoluble pellet (P = pellet fraction). Human α/β spectrin is a control for the insoluble RBC fraction, and PfEF-1α is a soluble parasite protein. Equivalent fractions were loaded in all blots. Immunoblots are representative of two-four independent experiments. Marker bands are in kDa.