Under a magnification of 2050X, this photomicrograph of a testicular tissue sample, was harvested from a Guinea pig with histoplasmosis, caused by the fungal organism, Histoplasma capsulatum. Note the presence of typical yeast cells, which had been grouped in two clusters.
“Histoplasmosis is an infection caused by the fungus Histoplasma. The fungus lives in the environment, particularly in soil that contains large amounts of bird or bat droppings. People can get histoplasmosis after breathing in the microscopic fungal spores from the air, often after participating in activities that disturb the soil. Although most people who breathe in the spores don’t get sick, those who do may have a fever, cough, and fatigue. Many people who get sick will get better on their own without medication. In some people, such as those who have weakened immune systems, the infection can become severe, especially if it spreads from the lungs to other organs.”
See the link below, for more on histoplasmosis.