Figure 2From: Proliferative activity of extracellular HIV-1 Tat protein in human epithelial cells: expression profile of pathogenetically relevant genesMonolayers of MCF-7 and MEC-1 cells cultured in low-serum medium and treated or not with extracellular Tat 101aa (100 ng/ml for 36 hours). Increased numbers of cells can be observed in Tat-treated cultures as compared to untreated control cultures. Phase contrast; microscopic fields taken with a 10× objective.Back to article page