page_title: Jesse Francis McClendon
section_title: Description of McClendon pH-probe
hierarchical_section_title: Jesse Francis McClendon / Description of McClendon pH-probe
caption_attribution_description: The first gastroenterology pH-probe by Jesse F. McClendon
context_page_description: Jesse Francis McClendon was an American chemist, zoologist, and physiologist known for the first pH measurement of human stomach in situ.
  Jesse F. McClendon made substantial contributions in a variety of fields, including invertebrate zoology, nutrition, life processes of cell membranes, the importance of pH control, the role of iodine in human health, and specifically its relation to prevention of goiters.
  In the early 1930s Jesse F. McClendon tested the healthfulness of hamburgers by putting a University of Minnesota medical student on only hamburgers and water diet for 13 weeks.
caption: The first pH-probe
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