The matricellular proteins. secreted protein acidic and rich in cysteine (SPARC) and SPARC-like 1 (SPARCL1). are produced by astrocytes and control excitatory synaptogenesis in the central nervous system. While SPARCL1 directly promotes excitatory synapse formation in vitro and in the developing nervous system in vivo. https://ashleyshomestores.shop/product-category/7-piece-power-reclining-sectional/