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CROSS-SPECIES ANATOMY - ANNOTATIONS

The Basic subset of the UBERON integrated, cross-species anatomy ontology is downloaded weekly from http://berkeleybop.org/ontologies/uberon/basic.obo. For more information about this ontology see the "About" page on the UBERON website at http://uberon.github.io/about.html.

Term:outer root sheath companion layer
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Accession:UBERON:0035609 term browser browse the term
Definition:The innermost layer of the outer root sheath.
Comment:[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"
Synonyms:xref: BTO:0003970



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Term paths to the root
Path 1
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          ectoderm-derived structure 0
            outer root sheath companion layer 0
Path 2
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          multicellular anatomical structure 0
            multicellular organism 0
              embryo 0
                embryonic structure 0
                  epiblast (generic) 0
                    germ layer / neural crest 0
                      germ layer 0
                        ectoderm 0
                          ectoderm-derived structure 0
                            ecto-epithelium 0
                              embryonic skin basal layer 0
                                skin of body 0
                                  skin epidermis 0
                                    hair follicle placode 0
                                      hair follicle 0
                                        bulb of hair follicle 0
                                          hair root sheath 0
                                            hair outer root sheath 0
                                              outer root sheath companion layer 0
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