<i>Pten</i> deletion does not lead to an accumulation of progenitor cells.

<p>Antibody staining on sections of P0 and P7 prostates with antibodies to CLU and TROP2 shows no accumulation of these proteins at earlier stages of development in controls (A, B, C, D). Increased expression of these markers is seen in the mutant (E, F, G, H) relative to controls from P7. Red arrowheads indicate buds.