TY - RPRT TI - Nucleotides as extracellular signalling molecules. AU - Z P Chen AU - A Levy AU - S L Lightman PY - 1995 DO - 10.1111/j.1365-2826.1995.tb00671.x UR - https://pubmed.ncbi.nlm.nih.gov/7767329/ ID - 7767329 ER -