Countable is a relative term in microbiology. I like that the author stuck to the phrase "countable colonies", since colony forming units are not really "countable as cells".
Ah, brings me back to the countless nights I spent counting plate after plate of HEK293 cells using a Haemocytometer [0], a light microscope, and a mechanical counter [1].
At least with HEK293 cells you could mostly tell if they were dead through the microscope (dead cells are darker).
I've made the same transition and feel the same way. I miss the bench, but I don't miss the late hours, vending machine dinners, and Christmas day cell culture maintenance.
At least with HEK293 cells you could mostly tell if they were dead through the microscope (dead cells are darker).
[0] https://en.wikipedia.org/wiki/Hemocytometer
[1] https://en.wikipedia.org/wiki/Tally_counter