Changes in the serum of mice infected with Streptococcus pneumoniae that stimulate in-vitro multiplication of virulent but not avirulent strains Firshein, W., Gross, D., Russo, J. p. 163
Identification of salmonellae of serogroup C1 by immunofluorescence and co-agglutination with antiserum against an oligosaccharide-protein conjugate Ekwall, E., Svenson, S. B., Lindberg, A. A. p. 173
Identification of Legionella pneumophila antigens and antibodies by immunoferritin electron microscopy Rodgers, F. G. p. 181
The microbial ecology of the large bowel of breast-fed and formula-fed infants during the first year of life Stark, P. L., Lee, A. p. 189
Effector cell-mediated immune response in mice immunised with Salmonella Nair, R., Kamat, R. S. p. 215
Detection of species-specific and cross-reactive cell-surface antigens of Bacteroides species by an indirect enzyme-linked immunosorbent assay Poxton, I. R., Brown, R., Collee, J. G. p. 223
A biotyping scheme for the subspecific discrimination of Escherichia coli Crichton, P. B., Old, D. C. p. 233
Sensitivity of thermophilic campylobacters to R-type pyocines of Pseudomonas aeruginosa Blackwell, C. C., Winstanley, F. P., Telfer Brunton, W. A. p. 247
Cytotoxic activity of Bacteroides gingivalis and Bacteroides asaccharolyticus van Steenbergen, T. J., dan Ouden, M. D., Touw, J. J., de Graaff, J. p. 253
Evidence that leptospiral lipopolysaccharide is not an important protective antigen Adler, B., Faine, S. p. 259
Bactericidal activity of serum for Klebsiella rhinoscleromatis: studies on serum from a patient with rhinoscleroma and sera deficient in antibody or complement North, M. E., Newton, C. A., Wright, D. J., Webster, A. D. p. 267