Abstract Background Developmental pluripotency-associated 3 (Dppa3. also called Stella or PGC7) is a principal maternal protein specially expressed in pre-implantation embryos. embryonic stem cells (ES cells) and primordial germ cells (PGCs). It plays critical role in the regulating of DNA methylation in zygotes and oocytes. https://www.nutritionesplus.shop/product-category/protein-powder/