A plant's first line of defence against infection is the physical barrier of the plant's skin , the epidermis of the primary plant body and the periderm of the secondary plant body.
22.
During embryogenesis, the epidermis splits into two layers : the periderm ( which is lost ) and the TGF-a, and through paracrine signal FGF7 aka keratinocyte growth factor ( KGF ) produced by the dermis below the basal cells.
23.
In humans, these alterations are less apparent, as they occur during fetal development-the same changes in the skin, for example, occur between weeks 9 and 24 of gestation ( see-the tadpole-like epithelium is periderm, beneath which a thick stratified epithelium forms, followed by apoptosis of the periderm ).
24.
In humans, these alterations are less apparent, as they occur during fetal development-the same changes in the skin, for example, occur between weeks 9 and 24 of gestation ( see-the tadpole-like epithelium is periderm, beneath which a thick stratified epithelium forms, followed by apoptosis of the periderm ).
