"A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level [goid 1666] [pmid 16670267] [evidence IDA]; The chemical reactions and pathways resulting in the breakdown of adenosine, adenine riboside, a ribonucleoside found widely distributed in cells of every type as the free nucleoside and in combination in nucleic acids and various nucleoside coenzymes [goid 6154] [pmid 16670267] [evidence IDA]; Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat [goid 6955] [evidence IEA]; The chemical reactions and pathways resulting in the formation of purine ribonucleoside monophosphate, a glycosamine consisting of a purine base linked to a ribose sugar esterified with phosphate on its glycose moiety [goid 9168] [evidence IEA]; Any process which produces a purine nucleotide from derivatives of it, without de novo synthesis [goid 32261] [pmid 9361033] [evidence IMP]; Any process that modulates the frequency, rate, or extent of cell-cell adhesion mediated by integrin [goid 33632] [pmid 11772392] [evidence IDA]; The change in morphology and behavior of a mature or immature T cell resulting from exposure to a mitogen, cytokine, chemokine, cellular ligand, or an antigen for which it is specific [goid 42110] [pmid 7594462] [evidence IDA]; The chemical reactions and pathways resulting in the formation of inosine, hypoxanthine riboside, a nucleoside found free but not in combination in nucleic acids except in the anticodons of some tRNAs [goid 46103] [pmid 8894685] [evidence IDA]; Any process that stops, prevents or reduces the frequency, rate or extent of the adenosine receptor signaling pathway. The adenosine receptor pathway is the series of molecular signals generated as a consequence of an adenosine receptor binding to one of its physiological ligands [goid 60169] [pmid 16670267] [evidence IDA]"