Sentence examples for undergo positive from inspiring English sources

Formal models of cultural evolution have illustrated circumstances under which behavioral traits that have no inherent advantage over others can undergo positive selection pressure.

Precursor cells expressing TCRs within a certain low-affinity range for complexes of self-peptide and major histocompatibility complex (MHC) undergo positive selection and differentiate into naive T cells expressing a highly diverse self-MHC-restricted TCR repertoire.

The DP compartment has reduced cellularity in young mice and fails to undergo positive selection to CD4+ or CD8+ single positive (SP) cells in vivo or activation-induced cell death in vitro.

Immature T-cell progenitors enter the thymus where through interactions with cortical and medullary thymic epithelial cells (TECs) they undergo positive and negative selection and become competent cells that do not react with self-antigens.

Here we show that mice deficient in both calcineurin and nuclear factor of activated T cells (NFAT c2/c3 lack a population of preselection thymocytes with enhanced ability to activate the mitogen-activated protein kinase (Raf-MEK-ERK) pathway, and fail to undergo positive selection.

These disease-associated mutations may undergo positive selection if they are simultaneously associated with relatively strongly beneficial traits.

Hematopoietic progenitors must receive signals from the thymic microenvironment to proliferate, differentiate, and undergo positive and negative selection [1].

DP cells further undergo positive and negative selection, and differentiate to CD4+ or CD8+ single-positive (SP) T cells.

This is supported by bioinformatic studies, indicating that glutamine-rich domains in proteins are conserved and can undergo positive selection [24].

Despite their pain and suffering, the couples consistently reported that they had undergone positive personal transformations, too.

Many genes that have undergone positive selection seem to be involved in similar diseases in both species.