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. 1998 Oct;42(10):2521–2526. doi: 10.1128/aac.42.10.2521

TABLE 1.

Susceptibilities of six isolates of S. pneumoniae to benzylpenicillina

Isolate Susceptibility Tube MIC and MBC E test result BEC
ATCC 671310 Sensitive 0.008, 0.008 0.008 ND
Serotype 19 Sensitive 0.016, 0.016 0.016 0.032
R1819 Intermediate 1.0, 1.0 0.5 1.0
R1855 Intermediate 1.0, 1.0 0.38 1.0
2312 Resistant 4.0, 8.0 6.0 8.0
2323 Resistant 4.0, 8.0 4.0 4.0
a

All values are expressed in milligrams per liter. ND, not done.