1 Iritis is uncommon, but can be due to trauma, infections, or autoimmune conditions. Symptoms include pain, red eye, and often, decreased vision.  Optic neuritis. The nerve travelling from the back of the eyeball into the brain can become inflamed.
Oak root fungus, or white rot, is a widespread disease that becomes visible just beneath the bark and on roots. What looks like layers of light brown to tan mushrooms form in clusters at the base of the trees.
Yeast. A less familiar fungus body is the yeast. Under the microscope, you can observe that yeast is composed of single cells that continually divides, by budding or fission to form lots and lots of cells.To the naked eye, this growth will appear to be a thick, syrupy growth (Figure 4a). less familiar fungus body, is the yeast. The yeast fungus is unicellular. Whether the fungus body is composed of mycelium or yeast, both will function in feeding and reproduction. Let us first discuss the more familiar filamentous appearance of the mycelium.