The proximal intestine was characterized by an outer layer of tightly packed granulocytes, the stratum granulosum, located on the peritoneal side of the stratum compactum.
The epidermal components of an active hair follicle consist of an outer layer of polyhedral cells, forming the outer root sheath, and an inner horny stratum, the inner root sheath.
In contrast, A-HA primarily accumulated in the outer stratum corneum with much smaller amounts penetrating into the epidermis and dermis.
Confocal analysis (24 h shown, Figure 4) showed that A-HA primarily accumulated in the outer stratum corneum with little penetration into the dermis.
Cholesterol sulfate is very abundant in the epidermis with the highest levels in the granular layer and a progressive decline from inner to outer stratum corneum.
The penetration of this HA size through the outer stratum corneum is facilitated by the addition of a phospholipid moiety and this addition likely increases solubility of HA in lipids (e.g., ceramides, cholesterol, and fatty acids) [ 88] that are present in the stratum corneum.
Saturated solutions of testosterone, containing trace amounts of radiolabelled (14C) testosterone, in each vehicle were applied to the outer (stratum corneum) surface of each skin sample and aliquots of receptor fluid were collected at 0, 2, 4, 8, 16, 20, 22 and 24 h and analysed for testosterone by scintillation counting.
Electron microscopic confirmation establishing that the ON-bipolars are truly presynaptic to the ipRGCs with dendrites in the outer stratum of IPL would further strengthen this conclusion.
In the primate, two types of monostratified ipRGC have been described that send dendrites to either the inner or the outer stratum of the IPL and both types generate sustained ON responses to light in vitro [8].
In order to reach the dermis layer, light must penetrate the epidermis, including the outer stratum corneum layer.
Microneedles developed initially for delivery of drugs and vaccines to the skin, have been adapted for collection of dermal ISF by crossing the skin's outer stratum corneum barrier and accessing the fluid found in viable epidermis and dermis below.
