1. Diversity of Helicobacter pylori vacA gene and cytotoxin production
G. Gościniak, A. Gaszewska-Mastalarz, A. Przondo-Mordarska, J. Zakrzeivska-Czenvińska, B. Iwańczak, E. Poniewierka 
Clinical Microbiology and Infection 
Volume 5, Issue 11, Pages (November 1999)
DOI: /j tb00511.x
Copyright © 1999 European Society of Clinical Infectious Diseases Terms and Conditions

2. Figure 1
An example of vacA middle-region typing. The middle region of vacA was amplified by PCR using pairs of primers. VA3-F and VA3-R or VA4-F and VA4-R, designated for identification of m1 or m2 allelic types respectively [5]. M, molecular weight marker VIII.
Clinical Microbiology and Infection 1999 5, DOI: ( /j tb00511.x)
Copyright © 1999 European Society of Clinical Infectious Diseases Terms and Conditions

3. Figure 2
Frequency of vacuolating cytotoxin production by strains of H. pylori isolated from children and adults.
Clinical Microbiology and Infection 1999 5, DOI: ( /j tb00511.x)
Copyright © 1999 European Society of Clinical Infectious Diseases Terms and Conditions