. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CARBON DIOXIDE IN DOGFISH BLOOD 383 produce a large error in the calculated value of C and hence of rCCX. For example, if the analysis of the plasma gave a result too high by , and the analysis of the whole blood too low by , an error of 38 would result in rCO2. For this reason little importance has been attached to individual values of rCCX. Each value of rCO2 reported in this paper is a mean for a group of comparable determina- tions. In addition to random errors, a systematic error may be inherent
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CARBON DIOXIDE IN DOGFISH BLOOD 383 produce a large error in the calculated value of C and hence of rCCX. For example, if the analysis of the plasma gave a result too high by , and the analysis of the whole blood too low by , an error of 38 would result in rCO2. For this reason little importance has been attached to individual values of rCCX. Each value of rCO2 reported in this paper is a mean for a group of comparable determina- tions. In addition to random errors, a systematic error may be inherent in the hematocrit determinations since centrifuge speeds above 3000 were not used. If the hematocrit numbers are systematically too high, due to failure to separate completely the plasma from the cells, the error would tend to obscure any real discrepancy between the concentra- <J o; <o o u 50 40 30 10. DOGFISH NO I I r C02= I 97 O = OXYGENATED BLOOD • = REDUCED BLOOD + = TRUE PLASMA DOGFISH NO 27 r C02= I 35 TCI = 10 60 20 30 40 50 P CO2 in mm. Ha. FIG. 1. CO, dissociation curves of whole blood and true plasma of dogfish (11) and (27). tions of CO2 in cells and plasma. Similarly in the estimation of chloride and water content of the cells, allowance for plasma trapped between the cells would tend to diminish the reported values of rCl and increase those of rCO2. Thus in every case the systematic errors, if they are significant, would tend to obscure, not enhance, the discrep- ancies which are the main findings of this investigation. RESULTS The characteristics of the CCX dissociation curves of the whole blood will be presented first, then the data relating to the distribution of CO2 between cells and plasma. The CO2 dissociation curves of dogfish blood resemble those of other vertebrates in many respects. When the log of Pco2 is plotted ^0* , «• '^ ! 2 R A [? Y j. Please note that these images are extracted from scanned page images that may have been dig
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
