1. Growth stimulation of Treponema denticola by periodontal microorganisms

   • P. F. ter Steeg
   • J. S. van der Hoeven

   Article Pages: 63 - 70

2. The effects of deoxycholate and sodium dodecyl sulphate on the serological reactivity of antigens isolated from six Bacteroides reference strains

   • I. Beckmann
   • F. Meisel-Mikolajczyk
   • H. C. S. Wallenburg

   Article Pages: 71 - 76

3. Modes of lactose uptake in the yeast species Kluyveromyces marxianus

   • M. Carvalho-Silva
   • I. Spencer-Martins

   Article Pages: 77 - 81

4. A non-passive mechanism of butyrate excretion operates during acidogenic fermentation of methanol by Eubacterium limosum

   • P. Loubiere
   • G. Goma
   • N. D. Lindley

   Article Pages: 83 - 89

5. Uptake of oxygen, release and degradation of hydrogen peroxide by Streptococcus mutans NCTC 10449

   • J. S. van der Hoeven
   • H. Hoogendoorn

   Article Pages: 91 - 95

6. Influence of the blood group reactive substances in saliva on the aggregation of Streptococcus rattus

   • A. J. M. Ligtenberg
   • E. C. I. Veerman
   • A. V. Nieuw Amerongen

   Article Pages: 97 - 107

7. Viability of Salmonella spp and indicator microorganisms in seawater using membrane diffusion chambers

   • Miguel A. Moriñigo
   • Roberto Cornax
   • Juan J. Borrego

   Article Pages: 109 - 117

8. Manganese as a controlling factor in mixed cultures of Lactobacillus plantarum and enterobacteriaceae

   • B. Bruyneel
   • M. Vande Woestyne
   • W. Verstraete

   Research Note Pages: 119 - 122