cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communication cellular response to stimulus anatomical structure development ossification cell communicationcell communication cellular response to stimuluscellular response to stimulus anatomical structure developmentanatomical structure development ossificationossification signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activity signaling receptor activitysignaling receptor activity extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular region cell membrane protein-containing complex extracellular regionextracellular region cellcell membranemembrane protein-containing complexprotein-containing complex