Percentage of Keyhole Limpet Hemocyanin (KLH) Responders at Day 28 Post-Vaccination 28 days after immunization (Day 28 for Vaccinations Only Group/Day 196 for Tysabri Plus Vaccinations Group) [clinicaltrials_resource:d4e76b975f36d508a58effd29af0b9ba]

KLH responders were defined as those participants who had at least a 2-fold increase over pre-immunization level of anti-KLH antibodies in their blood at 28 days after vaccination with KLH.

Percentage of Keyhole Limpet Hemocyanin (KLH) Responders at Day 28 Post-Vaccination 28 days after immunization (Day 28 for Vaccinations Only Group/Day 196 for Tysabri Plus Vaccinations Group) [clinicaltrials_resource:d4e76b975f36d508a58effd29af0b9ba]

KLH responders were defined as those participants who had at least a 2-fold increase over pre-immunization level of anti-KLH antibodies in their blood at 28 days after vaccination with KLH.