Of course not. All bacteria, which include Helicobacter pylori, can be seen exclusively under a microscope that is not present in an endoscope, regardless of the manufacturer and type - ultrathin or ordinary. And visually determine during the study, the presence of Helicobacter pylori, endoscopists also cannot. All they say is their subjective opinion, unless additional research methods are carried out.
During fibrogastroscopy, a fragment of the gastric mucosa is selected, then it is placed in a solution of a special chemical composition. If the mucous tissue (biopsy) contains the waste products of Helicobacter pylori, then the yellow color of the solution becomes bright red. The rate of redness depends on the quantitative composition of microorganisms in the gastric mucosa.
And there is also a cytological study. The same mucosal sample is viewed using a powerful microscope with 360x magnification. And Helicobacter pylori differs from its friendly microflora very simply because of its unusual shape. The spiral-shaped body of this elongated amoeba is equipped with additional antennae for insertion into the mucous membrane of the stomach and duodenum, as well as into the upper layer of the digestive organ to avoid the destructive effect of gastric acid.