GR 20263, a new broad-spectrum cephalosporin with anti-pseudomonal activity von C H O'Callaghan, P Acred, P B Harper, D M Ryan, S M Kirby, S M Harding

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Novel Method for Detection of β-Lactamases by Using a Chromogenic Cephalosporin Substrate von O'Callaghan, C H, Morris, A, Kirby, S M, Shingler, A H

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Principal beta-lactamases responsible for resistance to beta-lactam antibiotics in urinary tract infections von Simpson, I N, Harper, P B, O'Callaghan, C H

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A New Cephalosporin with a Dual Mode of Action von O'Callaghan, C H, Sykes, R B, Staniforth, S E

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Cefuroxime, a New Cephalosporin Antibiotic: Activity In Vitro von O'Callaghan, Cynthia H, Sykes, R. B, Griffiths, A, Thornton, J. E

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Fate Of Selected Cephalosporins In The Alimentary Tract Of Rats von O'Callaghan, Cynthia H, Ryan, D. M, Kirby, Susan M, Ross, G. W

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Classification of cephalosporins by their antibacterial activity and pharmacokinetic properties von O'Callaghan, C H

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Irreversible Effects of Serum Proteins on Beta-Lactam Antibiotics von Cynthia H. O'Callaghan

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Structure-Activity Relations and β-Lactamase Resistance von O'Callaghan, Cynthia H.

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R-factor mediated beta-lactamase production by Haemophilus influenzae von Sykes, R B, Matthew, M, O'Callaghan, C H

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Correlation between hydrolysis of the -lactam bond of the cephalosporin nucleus and expulsion of the 3-substituent von O'Callaghan, C H, Kirby, S M, Morris, A, Waller, R E, Duncombe, R E

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THE FORMATION OF METABOLITES FROM CEPHALOSPORIN COMPOUNDS von O'CALLAGHAN, C H, MUGGLETON, P W

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The effect of o-phenylenediamine on the biosynthesis of vitamin B12: a new vitamin B12 analogue von FANTES, K H, O'CALLAGHAN, C H

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The antibacterial activities of cephaloridine: laboratory investigation von Muggleton, P W, O'Callaghan, C H

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Description and classification of the newer cephalosporins and their relationships with the established compounds von O'Callaghan, C H

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Some cephalosporins in clinical use and their structure-activity relationships von O'Callaghan, C H, Kirby, S M

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CEFUROXIME-A NEW CEPHALOSPORIN ANTIBIOTIC von O'CALLAGHAN, CYNTHIA H., SYKES, R. B., RYAN, D. M., FOORD, R. D., MUGGLETON, P. W.

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[5] β-Lactamase assays von Ross, Gordon W., O'Callaghan, Cynthia H.

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Hæm utilisation and nitrate reduction by Hæmophilus influenzæ von Smith, Wilson, Hale, J. H., O'Callaghan, Cynthia H.

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Cefuroxime, a New Cephalosporin Antibiotic: Activity In Vivo von Ryan, D M, O'Callaghan, C, Muggleton, P W

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