Dermis is covered by epidermis. There are cells, which are tightly packed. Epidermis is covered with waxy coating to prevent the water loss. The surface area of the leaves is very large. That is needed to absorb more and more light. This large surface area will lose lot of water. That is risky. So the adaptation. Tried to tell you. Though I am not a botanist.
Melanocytes, which produce melanin for skin pigmentation, are found in human epidermal cells but not in leaf epidermal cells. Additionally, human epidermal cells contain structures like Langerhans cells for immune response, which are not present in leaf epidermal cells.
No, epidermal cells from petunia do not stain with phloroglucinol. Phloroglucinol is typically used to stain lignin in plant tissues, not epidermal cells. The stain mainly reacts with lignin, which is absent in the epidermal cells.
Langerhans cells
Epidermal cells are supplied with nutrients from blood vessels in the
Merkel cells compose about 8% of the epidermal cells. These specialized cells are found in the deepest part of the epidermis and are involved in the sensation of touch.
HIV mainly attacks cells in the immune system. I'm not aware of a major impact on skin (epidermal) cells.
Ependymal cells
The epidermal cells of an onion are located on the outermost layer of the onion bulb, forming a protective barrier.
Epidermal cells.
Epidermal cells receive nutrients primarily through diffusion from the underlying dermis layer, where blood vessels supply nutrients. Additionally, some epidermal cells can also absorb nutrients from sweat and sebum produced by skin glands.
The Stratum Spinosum are the cells that are also called the prickle cells. Stratum spinosum are not the cells: it's one of the epidermal layers. Keratinocytes are the cells which also called prickled cells.
Low blood supply and low keratin cause epidermal cells to die. Epidermal cells make up the epidermis, the outer layer of the skin covering the exterior body surface of vertebrates.