Fig. 6.
Constitutive expression of dominant negative Stat1HAY701F inhibits ATRA-induced differentiation into a morphologically mature monocytic phenotype.
(A, B) pCIneo, (C, D) Stat1(HA).7, and (E, F) Y701F.8 cells were grown with (B, D, F) or without (A, C, E) ATRA for 5 days and cytospin preparations were examined by May-Grünwald-Giemsa staining. (i, ii, iii) Enlargements of cells indicated by arrows in panels B, D, and F. (Magnification [A-E] 1:400; [i, ii, iii] 1:1200).