Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2003.644.647FasimF. JamilN. AhmedN. 7200367A total of 57 airborne bacteria were isolated from different locations of Centre for Molecular Genetics, University of Karachi. These isolates were purified and checked against different antibiotics like ampicillin, kanamycin, tetracycline and streptomycin. And against metal salts like Copper sulphate, Cadmium chloride, Cobalt chloride, Nickle sulphate and Mercury chloride. Most of the isolates were found to be highly resistant to the tested metals and antibiotics. 80.7% of the total organisms were pigment producers. These studies provide an idea of environmental status and can be used for its monitoring. Statistical analysis showed that no difference in three sampling sites.]]>Ahmed, N., F. Fasim, M. Arif and N. Jamil,2000322322237Conover, W.J.,19802nd Edn.,pp: 229-231pp: 229-231Gregory, P.H.,1973Hausinger, R.P.,1987512242Liu, Y.T., M.J. Sui, D.D. Ji, I.H. Wu, C.C. Cou and C.C. Chen,1993Bacillus turingensis var. Israelensis.]]>62131136Maniatis, T., E.F. Fritsch and J. Sambrook,1982pp: 6pp: 6Marthi, B. and B. Lighthart,19905612861289Marthi, B., B.T. Shaffer, B. Lighart and L. Ganio,19915727752776Mergeay, M., D. Nies, H.G. Schlegel, J. Greits, P. Charles and F. van Gijsegem,198534 is a facultative chemolithotroph with plasmid bound resistances to heavy metals.]]>162328334Nakara, H., T. Ishikawa, Y. Sarai, I. Kondo and S. Mitsuhashi,1977266165167Raihan, S., F. Sarwar and N. Ahmed,19951995pp: 143-154pp: 143-154Russell, M.P., J.A. Goldsmith and I. Phillips,19845189199Rheinheimer, B.,1974pp: 80-82pp: 80-82Shaffer, B.T. and B. Lighart,199734167177Summers, A.O., G.A. Jacoby, M.N. Swartz, G. McHugh and L. Sutton,197845128131