[Study of human lymphocyte subpopulations using a panel of monoclonal antibodies].

Characteristics of newly produced monoclonal antibodies (MCA) against differentiation antigens of human T- and B-lymphocytes and monocytes have been presented. The features of new MCA were compared with those of MCA with predefined specificity. According to two-color immunofluorescence and radioimmunoprecipitation data some of the former MCA were assigned to established clusters and the other were considered to recognize previously noncharacterized antigens.

[Errors in the lung volume measurement and its reproducibility by the method of helium displacement in the closed system].

On a mechanical model of the lungs systematic (constant) and accidental (random) errors in measuring the volume by the device (see article)-1, were determined and these amounted to +2.7 and identical to 2.2, respectively.