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The preparation and the reactivity of the zincioallene 3 is described. This organometallic compound reacts with aldehydes to yield propargylic halohydrins with good diastereo-

An angiogenic microfiber patch that releases angiogenic growth factors along aligned fibers and subsequently directs the spacing and orientation of mature and functional blood vessel formation is presented. The fiber patches are prepared by electrostatically binding electrosprayed vascular endothelial growth factor (VEGF)‐encapsulating poly(lactide‐co‐glycolide) (PLGA) microparticles with electrospun poly(lactide) (PLA) microfibers.