Guano, Histoplasmosis, and Our Service. Large accumulations of guano sometimes breeds a fungus called Histoplasmosis (see article, Is Bat Guano Dangerous?). This fungus can infect an eye or a lung, and in a serious case, you can lose your eye or lung to this infection.
Cromolyn sodium and nedocromil are prescribed as aerosols in metered dose inhalers (MDIs). Generally, you'll need to take either drug four times a day, but nedocromil has also been effective in a twice-per-day dose.
Thus in breast cancer, mast cells appear to act in a way that is the reverse from their action in rectal cancer. Exactly what mast cells do to breast cancer is still not clear. Sodium cromolyn, a chemical well known for stabilizing mast cells and limiting their activity, appears to be useful in treating breast cancer.