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| | Syphilis: Chapter VI |
 | | A negative test, however, by no means excludes a syphilitic infection, as is frequently shown in the case of typical gummas of the skin. |
 | | The test, let me add, is frequently alternately positive and negative in the same individual; is, also, often negative when the blood test is employed and positive when a spinal test is made, or vice versa. |
 | | They know their tests are inaccurate and they can't tell when they are right or wrong (if they could they would not need the tests), but they know to the smallest fraction of one percent, just how often their tests are wrong. |
| www.soilandhealth.org /02/0201hyglibcat/020134syphilis/020134syphilis-ch6.htm (5092 words) |
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