The structure of the T box DNA binding domain, showing how the transcription factor binds to DNA. Created and uploaded on 23 February by Sven625, a student in CHEM 153A Honors at UCLA.
Hook effect
A dose response assay illustrating the hook effect. Image created and uploaded on 14 February by Immcarle28, an Immunology student at Carleton College.
A red-spotted guard crab (Trapezia tigrina) protecting its home, a cauliflower coral (Pocillopora meandrina) around the island of Ta‘ū, American Samoa. Photo credit: Kerry Grimshaw, NOAA/NMFS/PIFSC/CRED. Uploaded by Rhododendrites on 8 February.
Black-billed magpie
Black-billed magpie at Seedskadee National Wildlife Refuge. Photo credit: Tom Koerner/USFWS. Uploaded by Rhododendrites on 7 February.