
Full text loading...
Category: Immunology
Cryopreservation of Peripheral Blood Mononuclear Cells, Page 1 of 2
< Previous page | Next page > /docserver/preview/fulltext/10.1128/9781555818722/9781555818715_CH27-1.gif /docserver/preview/fulltext/10.1128/9781555818722/9781555818715_CH27-2.gifAbstract:
The utility of cryopreserved peripheral blood mononuclear cells (PBMC) in clinical and diagnostic immunology is widely recognized. The use of cryopreserved PBMC offers multiple advantages for in vitro studies. The ability to batch specimens permits significant cost reductions through efficient utilization of labor and reagents and permits testing of multiple samples in a single run, thus avoiding interassay variability and providing more meaningful comparisons in longitudinal studies.
Full text loading...
CMV-specific RCF in cryopreserved versus fresh PBMC from HIV-infected patients and uninfected controls. Data were derived from samples from HIV-infected patients (HIV+, triangles) and uninfected controls (HIV−, squares). The diagonal represents the slope of equivalence between fresh- and frozen-cell assays.
CMV-specific RCF in cryopreserved versus fresh PBMC from HIV-infected patients and uninfected controls. Data were derived from samples from HIV-infected patients (HIV+, triangles) and uninfected controls (HIV−, squares). The diagonal represents the slope of equivalence between fresh- and frozen-cell assays.
Effect of viability on cryopreserved PBMC LPA results. Data were derived from samples from HIV-infected patients. The panels on the left show that when analyzing all samples, the LPA results significantly increase with higher viability. A breakpoint in the distribution pattern can be observed at a viability of 70%. The panels on the right show that when analyzing only samples with a viability of ≥70%, the LPA results are independent of the PBMC viability. SI, stimulation index.
Effect of viability on cryopreserved PBMC LPA results. Data were derived from samples from HIV-infected patients. The panels on the left show that when analyzing all samples, the LPA results significantly increase with higher viability. A breakpoint in the distribution pattern can be observed at a viability of 70%. The panels on the right show that when analyzing only samples with a viability of ≥70%, the LPA results are independent of the PBMC viability. SI, stimulation index.
CMV-specific IFN-γ in cryopreserved versus fresh PBMC from HIV-infected patients (triangles) and controls (squares). Data were derived from samples from HIV-infected patients and uninfected controls. The diagonal represents the slope of equivalence between fresh- and frozen-cell assays.
CMV-specific IFN-γ in cryopreserved versus fresh PBMC from HIV-infected patients (triangles) and controls (squares). Data were derived from samples from HIV-infected patients and uninfected controls. The diagonal represents the slope of equivalence between fresh- and frozen-cell assays.
Effect of cryopreservation on flow cytometric immunophenotyping. Data were derived from samples from HIV-infected subjects (triangles) and controls (squares). The diagonal represents the slope of equivalence between fresh- and frozen-cell assays. (A) Example of a cell surface marker that is well preserved during cryopreservation (CD95). (B) Loss of CD62L during cryopreservation.
Effect of cryopreservation on flow cytometric immunophenotyping. Data were derived from samples from HIV-infected subjects (triangles) and controls (squares). The diagonal represents the slope of equivalence between fresh- and frozen-cell assays. (A) Example of a cell surface marker that is well preserved during cryopreservation (CD95). (B) Loss of CD62L during cryopreservation.