In darkfield microscopy, one is therefore able to observe "live blood." Unlike the techniques of electron microscopy, no fixative is used so the picture is one of mobility rather than fixity. With stains and fixatives, the picture reveals a moment in time rather than a continuum.
What one sees in the mobile situation are the usual red blood cells, white blood cells, plasma—and what is floating in the plasma. Microbial activity, undigested food, fungi, and crystals are all apparent as is the capacity of the red blood cells to circulate and the white blood cells to devour morbid matter.
As we know, red blood cells transport oxygen to the tissues of the body. Without oxygen, we are devitalized, and according to some theories, the tissues go into a morbid state in which they can survive on fermentation rather than oxygenation. This is what is referred to as anaerobic and it is believed, by such persons as Nobel laureate Prof. Otto Warburg, that cancer thrives in such oxygen deficient conditions.
With darkfield microscopy, one often sees sees a condition called "rouleau" in which the red blood cells are stacked together as shown below. Some people believe it is because of the stress on the body of poor metabolism and others believe it is due to this as well as pH (acid-alkaline balance), wrong dietary choices or the presence of excessively high levels of free radicals. In any event, it is usually correctable.