MORE ON CROSS‐REACTIONS OF PNEUMOCOCCI AND KLEBSIELLA

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Abstract
Earlier studies are extended to the higher‐numbered K‐types of Klebsiella, several of which may now be fitted into the previously found groups. Additional correlations between chemical structure and serological specificity are given, not only among the higher K‐types, but also for several which were previously uninterpretable because structures were not known at the time. K1, K5, K6, K7 and K56 are shown to form a related group, although the reasons for their cross‐reactivities are not always the same.