![](http://www.alamy.com/thumbs/6/2F713E81-9BB0-40C8-AF6E-B4C830C9DF6B/KW30TE.jpg)
THM and beta subunits of PFO D4
Size: 1468px × 1703px
Photo credit: © Archive PL / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, book, bygone, copy, cover, editorial, historic, history, illustration, news, nostalgia, nostalgic, photo, photograph, photography, space, stock, textbook, vintage