sarcoplasmic reticulum sarcoplasmic sarcoplasmic reticulum SR sarcoplasmic reticulum sarkoplasmic-reteto sarcoplasmic reticulum SR. SR. sarcoplasmic reticulum Sarcoplasmic reticulum sarcoplasmic reticulum sarcoplasmic Sarcoplasmic reticulum sarcoplasmic sarcoplasmic Sarcoplasmic reticulum sarcoplasmic reticulum SR. SR Sarcoplasmic reticulum English