DES and neoplasm: Similarly, positive staining for CD30 (Dako; Clone Ber-H2; 1:40 dilution) (Figure 3B), desmin (Dako; Clone D33; 1:100 dilution) (Figure 3C), and SMA (Dako; Clone 1A4; 1:100 dilution) was also observed in some tumor cells in the 2 cases.