结素试验作为判断结核菌感染的特异性诊断,无论在临床,流行病学调查,以及防治工作中对卡介苗效果的考核均有其重要作用。近年来对结素试验的认识有了很大的进展,兹将有关问题简要综述如下。一、结素的低敏感反应 Knot test as a specific diagnosis of tuberculosis infection diagnosis, both in clinical and epidemiological investigations, and prevention and control of the evaluation of BCG effect have an important role. In recent years, great progress has been made in understanding the knot test. The relevant issues are briefly summarized as follows. First, the outcome of the low-sensitivity reaction