This is the question, asked nine days ago: A man of 100 kg, what will be the masses of his living human cells, dead human cells, extracellular matrix/matrices, bacteria, and the remainder?
As I have continued to research the question it has become apparent that I haven't been able to find out even what is the mass of the ECM of the heart, nor that of any other organ. The reason may be that the word "mass" is too common a word, with other senses as in "a large mass of tissue". Or it may be that this aspect is not of interest to biologists (and quite hard to measure?), and the ECM has not caught the attention of popularizers of science until very recently. I mean, the amount of each element in the periodic table the body is well publicized.
Whatever the reason, I am thinking that maybe I should ask a smaller, easier question, such as, what is the mass of ECM in the heart, or what is the percentage of ECM by mass in any organ. Would this go down well with Biology.SE, and if it would, would it be okay to keep the hard question, or would the new question get flagged as a duplicate.
I suspect that if (as I would quite like to do, and might seem logical) in the hope of getting an answer to at least one of them, I posted separate questions for the mass of the ECM of the brain, the kidneys, the liver, the heart, the biceps muscle, and so on, someone will object. But if I made a question asking for the ECM mass of ANY organ, I would be flagged as asking for a list, right?