Immunologists have demonstrated that insulin is expressed in the thymus? Not just in the pancreas.

免疫学家已经显示出胰岛素是在胸腺，而不是在胰腺表达。

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Tradition dictates that the prize for medicine is announced first, and this year it went to three immunologists.

传统上讲，每年医学奖都是第一个宣布，今年也不例外，获此殊荣的是三位来自免疫学界的精英。

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Immunologists now recognize a four-point response system of helper t cells: Th 1, Th 2, Th 17 and regulatory t cells.

免疫学家现在认识到了辅助性T细胞(以下代号th)的四点反应系统：Th 1, Th 2, Th17和调节性T细胞。

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"I think when you have close to 25 immunologists look at you and they can't figure out what's causing the problem, you can call that pretty rare, " she says.

CNN: iReport: 'Billy's Disease' baffles doctors

Immunologists argue over the significance of this, but a number of them believe that it will be difficult to come up with a vaccine that covers all these strains.

ECONOMIST: An ounce of prevention . . . | The

Dr. Jennifer Holter, who has been treating Billy at Oklahoma University Medical Center since the fall of 2008, says several immunologists have reviewed his case but the underlying reason for his immunodeficiency is still unclear.

CNN: iReport: 'Billy's Disease' baffles doctors