Cell wall There are several groups of organisms that have been called "fungi". Some of these groups (Oomycete and Myxogastria) have been transferred out of the Kingdom Fungi, in part because of fundamental biochemical differences in the composition of the cell wall. Most true fungi have a cell wall consisting largely of chitin and other polysaccharides. True fungi do not have cellulose in their cell walls. In fungi, the cell wall is the outer-most layer, external to the plasma membrane. The fungal cell wall is a matrix of three main components: Like plants, algae have cell walls. Algal cell walls contain either
Epiblast-derived stem cell EpiLC was shown to cause a reversion back to an ESC-like state (with levels of Alkaline Phosphatase staining recovered to that observed in ESCs as well as more ESC-like cell morphology), with Klf2 being required for the mechanism to occur. It has been proposed that PRDM14 induces this state by activating Klf2 via active demethylation recruitment of Oct-4; such technique has yet to be demonstrated in actual epiblast-derived EpiSCs. Epiblast-derived stem cell After the blastocyst stage, once an embryo implanted in endometrium (in case of rodent), the inner cell mass (ICM) of a fertilized embryo segregates into two layers: hypoblast