A bands

(redirected from A discs)

A bands

the dark-staining anisotropic cross striations in the myofibrils of muscle fibers, comprising regions of overlapping thick (myosin) and thin (actin) filaments.
References in classic literature ?
The person who wanted him was in the kitchen, and in the first moments, by the imperfect fire and candle light, Tom had not even an indefinite sense of any acquaintance with the rather broad-set but active figure, perhaps two years older than himself, that looked at him with a pair of blue eyes set in a disc of freckles, and pulled some curly red locks with a strong intention of respect.
Between the darkness of earth and heaven she was burning fiercely upon a disc of purple sea shot by the blood-red play of gleams; upon a disc of water glitter- ing and sinister.
Full browser ?