Rs. Raghuvanshi et al., BIODEGRADABLE DELIVERY SYSTEM FOR SINGLE-STEP IMMUNIZATION WITH TETANUS TOXOID, International journal of pharmaceutics, 93(1-3), 1993, pp. 180000001-180000005
Tetanus toxoid (TT) loaded biodegradable microspheres were prepared fr
om poly(DL-lactide-co-glycolide) (monomer ratio 65:35) of Mol. Wt 7500
0. The method of preparation was emulsification-solvent evaporation. I
n vitro vaccine release data are discussed. An in vivo immune response
study was performed on rats. Results of immunization with the convent
ional schedule of TT and encapsulated TT until 5 months after immuniza
tion are presented, which were found to be comparable.