# Adaptive selection in the evolution of programmed cell death-1 and its ligands in vertebrates

> Research article (Aging, 2020) · cited 14× · AI/ML

**Wikidata**: [openalex:W3006615430](https://www.wikidata.org/wiki/openalex:W3006615430)  
**Source**: https://4ort.xyz/entity/adaptive-selection-in-the-evolution-of-programmed-cell-death-1-and-its-ligands-in-vertebrates