the mycotoxin aflatoxin from some aspergillus fungi is one of the strongest toxins in the world. it is not produced, however, until the temperature reaches 25 degrees c (77 degrees fahrenheit).

This is all lower case. Can you fix that?
The mycotoxin aflatoxin from some aspergillus fungi is one of the strongest toxins in the world. It is not produced, however, until the temperature reaches 25 degrees C (77 degrees Fahrenheit).