| The range of expression stability of the other 7 genes was ( from most stable to least stable ) : GNB2L1 ( Guanine nucleotide binding protein , beta polypeptide 2 like 1 ) , HPRT 1 ( Hypoxanthine phosphoribosyl transferase 1 ) , RPL 32 ( ribosomal protein L 32 ) , ACTB ( beta actin ) , B2M ( beta 2 microglobulin ) , GAPD ( glyceraldehyde 3 phosphate dehydrogenase ) and TBP ( TATA binding protein ) . ^^^ Relative expression levels of the genes ( from high to low ) were : B2M , ACTB , GAPD , RPL 32 , GNB2L1 , TBP , and HPRT 1 . ^^^ CONCLUSION : Our data suggest that GNB2L1 , HPRT 1 , RPL 32 , ACTB , and B2M may be suitable reference genes in gene expression studies of neutrophils . . ^^^ |
| Guanine nucleotide binding protein , beta polypeptide 2 like 1 ( GNB2L1 ) , hypoxanthine phosphoribosyl transferase 1 ( HPRT 1 ) and ribosomal protein L 32 ( RPL 32 ) were the most stably expressed in alveolar macrophages , irrespective of disease severity . ^^^ GNB2L1 , HPRT 1 and RPL 32 were also stably expressed in alveolar macrophages cultured with no stimulation , or with interleukin 1beta , lipopolysaccharide or tumour necrosis factor alpha stimulation . ^^^ |