Ion concentration quantification with the help of single-wavelength dye fluorescence

This paper discusses the task of true physical quantity reconstruction from experimental data on the basis of fluorescence microscopy images when a specific ion indicator is used for an investigation into ion concentration. Brain cell functional activity in the form of calcium oscillation may be processed as quantitation on the basis of measurements of single-wavelength fluorescence intensity using data about dye loading protocol, excitation, and detection conditions without calibration of every experiment.

[Influence of macrophage culture supernatants on erythroblastic islets in rat erythropoiesis]

The isolation of central macrophages from erythroblastic islands (EI) permitted analysis of the role of EI macrophage factors in erythropoiesis. EI macrophage supernatant and peritoneal macrophage supernatant both had a similar effect on erythropoiesis. They exerted an erythropoietin-like effect. We observed changes in the number of erythroblasts per island; their distribution within each island during the maturation process was described. The role of the central macrophage in EI was discussed. We suggested a direct transfer of an erythropoietin-like activity to the erythroblasts which increases the efficacy of stimulation.