Abstract: Computing platforms and methods for dynamic presentation of graphical and video content are disclosed. Exemplary implementations may: provide, in a static browsing state, a static image associated with underlying video content; in response to an extended focus on the static image for a first threshold amount of time, expand a visual tile to a widescreen aspect ratio while remaining in the static browsing state; after a second threshold amount of time, initiate a dwell browsing state in which dwell tile content is provided in the expanded visual tile, while other content remains in the static browsing state; in response to a determination that the playback device supports a dwell video mode, play a video asset within the expanded visual tile; and in response to a determination that the playback device does not support the dwell video mode, provide an alternate non-video visual asset within the expanded visual tile.

Abstract: Provided are unique affibodies specific for bone morphogenetic protein 2 (BMP-2), vascular endothelial growth factor (VEGF), fibroblast growth factor 2 (FGF-2), platelet-derived growth factor (PDGF), granulocyte-macrophage colony-stimulating factor (GM-CSF), inteleukin-4 (IL-4), and glial derived neurotrophic factor (GDNF), and well as hydrogels that include the affibodies and the corresponding protein. Also provided are methods of using the hydrogels, for example to treat bone injury, wounds, and neuron injury. In some examples, the hydrogel includes at least two different affibodies specific for the same protein, but have different disassociation constants (KD).