Oral Immunization against Pneumococcus Types Ii and Iii and the Normal Variation in Resistance to These Types among Rats
نویسنده
چکیده
1. Considerable variation in the resistance of different rats toward Type II pneumococcus has been demonstrated. In general, older rats survive much greater doses than young ones, illustrating the acquisition of a natural partial immunity. The same is true for Type III but the immunity appears somewhat later in life and does not reach the same height. 2. An active immunity can be created against Types II and III in rats by feeding the dead organisms or the Berkefeld filtrate of the bile salt-dissolved cells. This immunity resembles that obtained against Type I in several respects.
منابع مشابه
The Rôle of the Soluble Specific Substance in Oral Immunization against Pneumococcus Types Ii and Iii
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عنوان ژورنال:
- The Journal of Experimental Medicine
دوره 54 شماره
صفحات -
تاریخ انتشار 2003