And as a result of that low PH that low PH can also kill off our bacterial cells that enter our stomach along with our food. Now parietal cells don't only secrete hydrochloric acid they are also responsible for producing a glycoprotein known as the gastric intrinsic factor. And this intrinsic factor is basically responsible for allowing the small intestine as we'll see in the next lecture to basically absorb an important type of vitamin known as B twelve. And finally let's move on to our g cells. So the mucous cells are these brown cells the cheap cells are these purple cells the red cells are the parietal cells and these blue cells found all the way at the bottom are the g cells. Now g cells are also easy to remember because g cells as the name implies release a type of hormone known as gastrin.