Abstract
Conclusion
Bearing in mind the percentage of experimental error, the number of natural deaths that would occur and those that would follow immediately or within 24 hours after injection, etc., one could conclude that specificity had been demonstrated and that this strain of rat virus was truly an acclimated one from Flexner's Philadelphia virus.
B. Armstrong's Lansing Strain. All the positive controls (Group E) died; all negative controls (Group A) lived. All animals injected with “early horse serum”and virus (Group B) died. Two (6.6%) of Group C, the “convalescent horse serum”protected and 4 (13.3%) of Group D, given pooled convalescent human serum, died.
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