Stem Cells and Pluripotency (2C) Practice Test

In early embryonic development, investigators sampled cells at two time points: Day 3 (morula-like stage) and Day 7 (post-implantation-like stage). Day 3 cells, when placed in culture with different cues, generated derivatives consistent with multiple germ layers. Day 7 cells primarily generated tissue-restricted progenitors. Which statement best applies the concept of pluripotency to these observations?

A study of stem-cell-based retinal repair evaluated whether a cell product retained pluripotency before directed differentiation. The product expressed OCT4 and could be expanded extensively. However, when provided cues for three different lineages, it consistently produced only retinal pigment epithelium-like cells and failed to produce mesoderm-like derivatives. Which conclusion is most consistent with pluripotency reasoning in this context?