TY - RPRT TI - Ca2+ sparks are initiated by Ca2+ entry in embryonic mouse skeletal muscle and decrease in frequency postnatally. AU - Lois G Chun AU - Christopher W Ward AU - Martin F Schneider PY - 2003 DO - 10.1152/ajpcell.00072.2003 UR - https://pubmed.ncbi.nlm.nih.gov/12724135/ ID - 12724135 ER -