The Combined inhibitory effect of GroA/Cro and LMWF (A,B), or in combination with FS (C,D) on the growth of DU-145 cells after an incubation time of 72 h (A, C) or 96 h (B,D). Cells were incubated in the presence of various concentrations of LMWF (300 µg/mL), GroA/Cro (10 µM), and compared with combination treatments (LMWF + GroA/Cro) (A,B). Cells were incubated in the presence of various concentrations of FS (1000 µg/mL), GroA/Cro (10 µM), and compared with combination treatment (FS + GroA/Cro) (C,D). A relative cell viability of 100% was designated as the total number of cells that grew after 72 and 96 h cultures in the absence of LMWF and GroA/Cro. Data is presented as means ± S.D., n = 6. Asterisks indicate a value significantly different, *** p < 0.001 (Student’s t-test).