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That is a very interesting idea! I believe this is what Dr Markov does in his clinic, when prescribing phages: he checks that the phages are able to kill the patient's isolated bacteria on agar first, and only if the bacteria appear susceptible does he give the patient phage therapy.
I am not clear, though, on how to do this in a reliable way. When I have grown bacteria on the urine dipslide agar, sometimes they will continue to grow more and more each day (as the days go by, the bacteria will occupy more and more area of the agar). Other times the bacteria will just stop growing on the dipslide agar after the first 24 hours, and remain in a small corner of the agar, even though I continue to incubate the agar at 37°C.
I imagine the way you detect bacterial susceptibility to phages is by observing a cessation in bacterial growth once the phages are added to the agar. But if this cessation in growth can occur anyway just on its own, you would not have a reliable way to observe phage susceptibility.
On the chromogenic agar plates, you do not seem to get continued growth at all. I have noticed you will get some growth around the areas where you have transferred some bacteria, but after around 24 hours of incubation, you do not seem to get any further growth. The bacteria remain localized, and do not grow to expand across the plate. Maybe bacteria find it hard to grow on chromogenic agar?
For the nutrient agar slants/slopes (nutrient agar in a small glass test tube), when I add bacteria this does seem to grow to cover the entire surface. But the surface area in these tests tubes is small, so not an ideal place to test for phage susceptibility. But on nutrient agar, the bacteria do seem to grow well,
If I were to buy some nutrient agar plates, I think this might work. You could watch the bacteria grow bit by bit across the nutrient agar plate. Then while the bacteria are still growing across the plate, you could add the phage solution, and observe whether that halts all growth.
A few days ago a started taking the broad-spectrum gastrointestinal phage product called Pyobacteriophage Complex, made by Microgen. I am taking this orally, rectally (administered into the colon using a colon tube), and intranasally (sprayed into the nose with a nasal spray bottle). I noticed some mild twinges in my intestines after a few hours, and then the next day, I woke up feeling more distanced from my ME/CFS. I had a slight glimpse of what it would be like to be healthy without ME/CFS.
So that was a good start. But then for the next two days I went back to my normal ME/CFS state. My dreams have been quite strange and disturbed in the last two days, suggesting there is something going on in my intestines.
I have just started taking a good probiotic, to replace any bad bacteria that may have been killed by the phages. We will see what happens over the next few days.
Hello! Do you have any update on the phage cocktail? Any effect? Any side effects?