An Evaluation of Vaccines and the Effectiveness of Vaccinations against Typhoid Fever. X. Test of Passive Resistance on Chick Embryos with Serums of Persons Immunized with N, P, S and T Vaccines
ARMY BIOLOGICAL LABS FREDERICK MD
Pagination or Media Count:
The purpose of this report was to ascertain the growth of protective antibodies in the serum of persons vaccinated with various serums. The level of these antibodies can be determined on mice or chick embryos. Two considerations favored the choice of embryos the much smaller amount of serum needed to make this test, and the greater objectivity of the test, resulting from the total humoral neutrality of the embryo itself.
- Medicine and Medical Research