C5 and melanoma: The above pattern is consistent with (but more complex than) other studies using melanoma cells and the C5 antibody (Bertolotto et al, 1998; King et al, 1999; Wu et al, 2000) or another antibody (D5) (Hemesath et al, 1998) in which an ∼55–60 kDa Mitf-M doublet is detected.