unsaturated fatty acid biosynthetic process long-chain fatty acid biosynthetic process lipoxin biosynthetic process lipoxin B4 metabolic process lipoxin B4 biosynthetic process bf GO:2001306 lipoxin B4 biosynthesis The chemical reactions and pathways resulting in the formation of lipoxin B4. Lipoxin B4 is a C20 hydroxy fatty acid having (5S)-, (14R)- and (15S)-hydroxy groups as well as (6E)- (8Z)-, (10E)- and (12E)-double bonds. 2012-03-07T11:15:04Z lipoxin B4 anabolism LXB4 anabolism biological_process lipoxin B4 synthesis LXB4 synthesis lipoxin B4 formation LXB4 formation LXB4 biosynthesis LXB4 biosynthetic process