Preferred Label : outer root sheath companion layer;
Uberon definition : the innermost layer of the outer root sheath.;
Uberon Structure note : It contains cells that are morphologically and biochemically different from the inner
root sheath and outer root sheath. The cells of the companion layer are more flattened
than the other cells of the outer root sheath and do not contain glycogen. In addition,
a novel human type II cytokeratin, K6hf, is specifically expressed in the companion
layer of the hair follicle;
Origin ID : 0035609;
part of
the innermost layer of the outer root sheath.
