Element composition of inner ear lymphs in cats, lizards, and skates determined by electron probe microanalysis of liquid samples

摘要: Siliconized, glass micropipets whose tips were filled with oil used to obtain small (<100 nl) liquid samples from perilymphatic and endolymphatic regions of the inner ears anesthetized animals: 3 cats, 19 alligator lizards (Gerrhonotus multicarinatus), 8 skates (Raja erinacea). Samples cerebrospinal fluid seawater also obtained for skates. Electron probe microanalysis was measure concentrations following elements in each sample: K, Na, Cl, Ca, Mg, P, S. The Na K cat perilymph (Fig. 1 Table 2) agree previous estimates (Table 4) while endolymph show relatively low high concentrations. From a comparison our results work 3), we infer that contamination is study, no large species difference content indicated by present data available mammals. Our Cl concentration higher Ca Mg are lower than perilymph. composition cats roughly same (Figs. 2, 2). Uncontaminated apparently difficult obtain, although compositions few suggest low. In nearly two ear lymphs 2), contrast hundredfold ratio found vertebrates. element correlated which kept, whereas shows such correlation.