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The rapid increase in the use of the opsonic index and vaccine therapy in the hands of private workers has necessitated a simplification of the apparatus required. The combination of an opsonizer and incubator large enough for the needs of a single individual has been brought about in the design illustrated here, which explains itself. The apparatus, devised by me, has been in use for the past year in the inoculation department of St. Mary's Hospital, London, where I have been an assistant under Sir Almroth Wright, and has been found to be satisfactory in every respect. The temperature is maintained practically constant by using a Reichert regulator, and with a single fire one has constantly ready an opsonizer as well as an incubator.
The full-sized model is only 12 inches square, and yet will hold in the incubating chamber 36 vaccine tubes, and on either side of the
CLEMENGER FJ. COMBINED OPSONIZER AND INCUBATOR. JAMA. 1910;LIV(8):614. doi:10.1001/jama.1910.92550340001001l
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