Eczema on your scalp is the same as it is everywhere else, except for two complications. 1  most people have hair on their heads, which makes it difficult and unsightly to apply thick creams and ointments. 2  itâs right out in the open where everyone can see.
The alveolar epithelium comprises two main cell types: the alveolar type I and alveolar type II cell.The type I cell is a complex branched cell with multiple cytoplasmic plates that are greatly attenuated and relatively devoid of organelles; these plates represent the gas exchange surface in the alveolus.On the other hand, the type II cell acts as the caretaker of the alveolar compartment.he type I cell is a complex branched cell with multiple cytoplasmic plates that are greatly attenuated and relatively devoid of organelles; these plates represent the gas exchange surface in the alveolus. On the other hand, the type II cell acts as the caretaker of the alveolar compartment.
CD1 (cluster of differentiation 1) is a family of glycoproteins expressed on the surface of various human antigen-presenting cells.They are related to the class I MHC molecules, and are involved in the presentation of lipid antigens to T cells.However their precise function is unknown.ypes [edit]. CD1 glycoproteins can be classified primarily into two groups which differ in their lipid anchoring. 1  CD1a, CD1b and CD1c (group 1 CD1 molecules) are expressed on cells specialized for antigen presentation.