Fig. 3. A. Rhabdomyosarcoma with spindle-shaped cells with a dense, interlacing pattern (H & E, × 160). B. Same specimen at a higher magnification. Note variation in size and shape of the spindle-shaped cells with a high density of nuclear chromatin (H & E, × 640). (Courtesy of R. Jean Campbell, MB, ChB, Mayo Clinic, Rochester, Minnesota.)