ARTICLES
	Potential mechanisms of resistance to the modern fluorinated 4-quinolones
	C. S. LEWIN, RUTH A. ALLEN, and S. G. B. AMYES
	J Med Microbiol 1990. 31: 153-161. [PDF]
	Porphyrin ring source can alter the outer membrane protein profile of non-typable Haemophilus influenzae
	I. MACIVER, T. O'REILLY, and M. R. W. BROWN
	J Med Microbiol 1990. 31: 163-168. [Abstract] [PDF]
	Hydrolytic enzyme production by Clostridium difficile and its relationship to toxin production and virulence in the hamster model
	S. V. SEDDON, I. HEMINGWAY, and S. P. BORRIELLO
	J Med Microbiol 1990. 31: 169-174. [Abstract] [PDF]
	Virulence factors of bacteraemic Escherichia coli with particular reference to production of cytotoxic necrotising factor (CNF) by P-fimbriate strains
	J. BLANCO, M. P. ALONSO, E. A. GONZALEZ, M. BLANCO, and J. I. GARABAL
	J Med Microbiol 1990. 31: 175-183. [Abstract] [PDF]
	Differences in susceptibility of inbred and outbred infant mice to enterotoxigenic Escherichia coli of bovine, porcine and human origin
	MARION DUCHET-SUCHAUX, CAROLE LE MAITRE, and ANNE BERTIN
	J Med Microbiol 1990. 31: 185-190. [Abstract] [PDF]
	Comparison of host responses induced by Salmonella typhimurium infection in genetically resistant and susceptible mice
	M. TAKAHASHI, T. USHIJIMA, and A. SETO
	J Med Microbiol 1990. 31: 191-194. [Abstract] [PDF]
	Serotyping and subtyping of Neisseria meningitidis isolates by co-agglutination, dot-blotting and ELISA
	E. Wedege, E. A. Hiby, E. Rosenqvist, and L. O. Frholm
	J Med Microbiol 1990. 31: 195-201. [Abstract] [PDF]
	Long-term viability of stored mycoplasmas and ureaplasmas
	PATRICIA M. FURR and D. TAYLOR-ROBINSON
	J Med Microbiol 1990. 31: 203-206. [Abstract] [PDF]
	A new class of conjugative plasmid in Staphylococcus aureus
	E. E. UDO and W. B. GRUBB
	J Med Microbiol 1990. 31: 207-212. [Abstract] [PDF]
	Identification and cloning of the Type IIIa plasmidencoded dihydrofolate reductase gene from trimethoprim-resistant gram-negative bacteria isolated in Britain
	C. J. THOMSON, K. J. TOWNER, H.-K. YOUNG, and S. G. B. AMYES
	J Med Microbiol 1990. 31: 213-218. [Abstract] [PDF]
	The production and characterisation of rabbit antiserum and murine monoclonal antibodies to Haemophilus ducreyi
	GEETA Y. FINN, Q. NAJMA KARIM, and C. S. F. EASMON
	J Med Microbiol 1990. 31: 219-224. [Abstract] [PDF]
	ANNOUNCEMENTS
	J Med Microbiol 1990. 31: 225-226. [PDF]
	Books Received
	J Med Microbiol 1990. 31: 227. [PDF]

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