At EnoreeG:
My understanding is:
That no gram +ives produce endotoxin. Endotoxins are part of the cell wall of bacteria classified as gram-ve, and are released when they die.
Some gram +ves produce exotoxins, which they spit out into their environment while the bacteria live on.
I don't know the names of the bacteria commonly called 'beneficial'.
The relationship between us and our bacteria is so complex and so unknown that I don't know that we can define any species as entirely beneficial. I expect there are many that have both advantages and disadvantages for us.
My understanding is:
That no gram +ives produce endotoxin. Endotoxins are part of the cell wall of bacteria classified as gram-ve, and are released when they die.
Some gram +ves produce exotoxins, which they spit out into their environment while the bacteria live on.
I don't know the names of the bacteria commonly called 'beneficial'.
The relationship between us and our bacteria is so complex and so unknown that I don't know that we can define any species as entirely beneficial. I expect there are many that have both advantages and disadvantages for us.