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Huber [16A1] notes that the Gilbert method involved the immediate subcutaneous reinjection of about 2cc of fluid from a pleural effusion "if the fluid is pale yellow, transparent, or even somewhat hemorrhagic." Huber further noted that for cases "in which a cure follows the single exploratory puncture and the withdrawal of a few cc of fluid - may we not unintentionally have resorted to autoserotherapy? A small amount of fluid which is subsequently absorbed, escaping into the tissues, through the small wound made by the exploring needle, accomplishes the same purpose as though it had been injected."

Huber [16A1]: "Carried out under the usual aseptic precautions, no local or general ill effects follow. Occasionally we meet with a case in which the fluid is turbvid and has a decided odor; under such conditions the method is not to be resorted to."