It is with great sadness that I received news this morning of the passing yesterday of our dear colleague and friend Ralph Grassmann.  Ralph has been a valued member of our Retrovirology editorial board, and we plan to remember more about Ralph in Retrovirology in the coming days.  A short piece about Ralph and his research interests can be read at the following link:  https://htlv-tax.com/biosketchTax_webpage07RG.doc      We will miss Ralph for his science and his friendship!  Please see a picture of Ralph taken in 2004 below.