CorrectionsFreshly elutriated human monocytes were allowed to interact with an anti-ICAM3-coated well, which leads to rapid PPAR␥ expression (13), and then stimulated, or not (negative, oxLDL), with oleoyl LPA. Some cells were then briefly exposed to oxidized LDL before intracellular lipid stores were visualized with oil red O stain. (b) LPA increases the expression of CD36 on the surface of primary human monocytes. Monocytes engaging anti-ICAM3 were treated or not with LPA, and then recovered by gentle scraping and washing by centrifugation before their surface CD36 was assessed by flow cytometry. (c) LPA and the LPA analogs XY4 and XY8 stimulate CD36 promoter function only when the PPRE is present. RAW264.7 cells were transfected with the human CD36 promoter containing the PPRE (CD36 Ϫ273 ) or a reporter that lacks only this element (CD36 Ϫ261 ) and then stimulated with oleoyl LPA, azPC, XY4, or XY8. Expression of luciferase normalized to -galactosidase was determined as above. (d) Anti-CD36 blocks LPA-stimulated accumulation of cholesterol from oxidized LDL. Freshly isolated human monocytes were treated as in a, but after being preincubated with a blocking anti-CD36 antibody before exposure to oxidized LDL.www.pnas.org͞cgi͞doi͞10.1073͞pnas.0538065100 MEDICAL SCIENCES. For the article ''A monoclonal antibody recognizing human cancers with amplification/overexpression of the human epidermal growth factor receptor,''