Beloved Full House star Dave Coulier revealed back in November that he had been diagnosed with a “very aggressive” form of stage three non-Hodgkin's lymphoma and that he was in the process of undergoing chemotherapy treatments. Now, his wife Melissa has given an update on the 65-year-old's progress. "He has some really tough days, you know, and as the chemo has been accumulating it gets a little tougher and more difficult," she revealed, speaking with Detroit's ABC 7 News...