title: Comparative assay of immunization potencies of the Czechoslovak, Danish and Japanese vaccines as a preliminary step to the seed lot system in the production of BCG vaccine in Czechoslovakia.
mesh_terms: D000818:Animals; D001500:BCG Vaccine / Q000592:standards*; D003604:Czechoslovakia; D003718:Denmark; D005069:Evaluation Studies as Topic; D005612:Freeze Drying; D006168:Guinea Pigs; D007564:Japan; D008297:Male; D009929:Organ Size; D013154:Spleen; D014944:World Health Organization
chemical_list: D001500:BCG Vaccine