Survival was doomed in patients with B symptoms, neck lymph node involvement and low radiation dose.

全身(B)症状、颈淋巴结侵犯及放射治疗剂量是影响生存率的重要因素。

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All instruments required that B-criteria co-occur with the mood episode, except KSADS-PL, which considered five out of the seven symptoms.

所有诊断工具都需要B-标准和心境发作一同出现，但除了KSADS-PL只是要求七项症状中的五项。

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Those are also symptoms of a deficiency of B-12, a key nutrient needed to make red blood cells and DNA and keep the nervous system working right.

这也是维生素b - 12缺乏的症状，B - 12是合成红细胞和DNA、维持神经系统正常运转的不可或缺的营养物质。

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These symptoms are called "B symptoms" and are nonspecific and more consistent with infection instead of a malignant disease.

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For many, Hepatitis B is a "silent" disease, and decades can pass without any noticeable symptoms.

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"Hepatitis B, hepatitis C and HIV are serious medical conditions, and infected patients may not have outward symptoms of the disease for many years, " the department said.

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