For both clinical and cosmetic reasons, plastic surgeons inject substances into connective tissue underlying the skin epidermis. This plumps up areas deficient in soft tissue, and is used to reduce surgical scars or wrinkles, for example. Which normal connective tissue components are good candidates to be injected as fillers in this type of procedure?Choose one or more:

A.) cadherin

B.) hemidesmosome

C.) collagen

D.) glycosaminoglycan

C.) collagen

D.) glycosaminoglycan

Explanation:

Cadherins are the main cell adhesion molecules. These molecules are transmembrane glycoproteins responsible for cell-cell junctions to maintain the integrity of animal tissues. Collagen is a protein molecule or protein that forms fibers, the collagen fibers. They are secreted by connective tissue cells such as fibroblasts, as well as by other cell types.Hemidesmosomes are cell-binding structures that connect epithelial cells to the basement membrane. They are especially important in tissues subjected to mechanical stress. Glycosaminoglycans are a type of functional and structural biomolecules, mainly present in connective, epithelial and bone tissue, as well as in the intercellular environment.