. Archives of physical medicine and rehabilitation . ed. Theyshowed also that an immune serumholds from two to ten times greaterabsorption limits in the ultravioletregion, as does a normal or non-im-mune serum. This increase in the limits of ultra-violet wave length absorption in theserum is observed as a result of re-peated bodily irradiations, and ex-presses, probably, what clinicians re-port when they speak of the genera!raising of immunity incident to sys-temic actinic radiations. Hemoglobin absorption spectra arewell known from their constant reap-pearance in general physiology treatises.
. Archives of physical medicine and rehabilitation . ed. Theyshowed also that an immune serumholds from two to ten times greaterabsorption limits in the ultravioletregion, as does a normal or non-im-mune serum. This increase in the limits of ultra-violet wave length absorption in theserum is observed as a result of re-peated bodily irradiations, and ex-presses, probably, what clinicians re-port when they speak of the genera!raising of immunity incident to sys-temic actinic radiations. Hemoglobin absorption spectra arewell known from their constant reap-pearance in general physiology hemoglobin undergoes changes un-der the functional activity of respira-tion, it changes to various loosely com-bined products, of which we may men-tion oxyhemoglobin and carbon dioxidehemoglobin. There has been found ashift of the limit of ultraviolet absorp-tion, and visible light absorption, whichplays a peculiar role in the physiologyof respiration, as follows: Changedhemoglobin absorbs a greater limit ofultraviolet and visible light than un-. rig. 2—Nos. 1 and 2—Dividing nuclei from gill plate of salamander , in glycerol. Photographed with ultraviolet light of 280 uu. Thechromatic substance appears as if stained. No. 3—Edge of sternal cartilageof newt. Living. Photographed with ultraviolet light. The nuclei areopaque. No. 4—The same photographed with ordinary light. The nuclei aretransparent. No. 5—Red blood corpuscles of the newt. Living. Photo-graphed with ordinary light; although oblique illumination was used thenuclei are almost invisible. Traces of diffraction are seen around the cor-puscles. No. 6—Amelia. Living. Photographed with ordinary light; thenucleus Is lust visible, but transparent. (Nos. 1 to 3 after Koeler.) changed hemoglobin. The limit is ex-tended by a shift which includes longerwave lengths. From which it appearsthat as soon as hemoglobin sufferswhatever chemical change (oxyhemo-globin, methemoglobin, reduced hemo-globin, ca
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