Figure 6. Effect of the monoclonal antibody (mAb) D5E5 on the sperm motility. The mAb showed time-dependent reduction in the sperm progressive motility. As seen in the graph, in the presence of the mAb D5E5, the percent progressive motility was reduced to 36% within 15 minutes of incubation. The myeloma supernatant had negligible effect on the sperm motility. Each point represents mean of 3 readings (± standard errors).