| Namespace | MPheno.ontology | Obsolete | false |
| description | any structural anomaly of the dark-staining region of a sarcomere that is situated between two I bands and marked by partial overlapping of thin (actin) and thick (myosin) filaments; an A band is anisotropic to polarized light and contains the entire length of a single thick filament; its center is traversed by the paler H zone, which in turn contains the M line |
