Rituximab (Rituxan and MabThera) is a drug used to treat rheumatoid arthritis that has not improved with other types of medications, as well as certain forms of vasculitis.
As retirement accounts, the Roth IRA and the TSP Roth have annual investment limits. The TSP Roth has a significantly higher investment limit than the Roth IRA. Investors will be able to put $16,500 in a TSP Roth, whereas a maximum of $5,000 can be put into a Roth IRA in 2011. A TSP Roth has a higher catch-up provision as well.
Traditional IRAs give a tax deduction when you contribute but are usually taxable when you withdraw. Roth IRAs, on the other hand, give no up-front tax deduction but you typically owe no taxes when you withdraw. You can think of a traditional IRA as tax deferred and a Roth IRA as tax free.