86OVERVIEW OF CELL SIGNALING AND CELL COMMUNICATIONCell Signaling is an important facet of biological life. It allows cells to perceive and respond to the extracellular environment allowing development, growth, immunity, etc. Additionally, errors in cell signaling may result in cancer growth, diabetes. By understanding the processes that govern these pathways, scientists may understand the flow of information and transmission thereby allowing humans to treat diseases and grow tissues. There are many different ways for cells to communicate with each other and the outside environment. They may communicate directly through juxtacrine signaling, over short distances through paracrine signaling and over large distances through endocrine signaling.gawadjinit@yahoo.comReview522015Signals,Receptors,G Couple Protein Receptors,IntegrinsJineetkumar Gawad,Bhakti Chavan,Pradeep Bawane,Amol Mhaske,Savita TauroSt. John Institute of Pharmacy & Research, Palghar 401 404, Maharashtra, India.,Wilson College, Mumbai 400 007, Maharashtra, India.,St. John Institute of Pharmacy & Research, Palghar 401 404, Maharashtra, India,Sandoz India Pvt Ltd, Mumbai 400 708, Maharashtra, India.,St. John Institute of Pharmacy & Research, Palghar 401 404, Maharashtra, India.