Abstract: Fluidic systems, devices and methods are provided for separating and sequestering particles from a fluid flow within traps in a fluidic chip is provided. The fluidic platform is particularly suited for parallel live zebrafish embryo studies providing automated zebrafish embryo trapping and flow through culture as well as whole mount zebrafish antibody staining functions. The zebrafish on a chip testing platform uses a chaotic hydrodynamic trapping process to trap and retain zebrafish embryos in a consistent body orientation (i.e., head pointed inward) without any external adjustments. The system and apparatus can also be adapted to be a multifunctional concentration gradient generator (CGG) that can be used to automatically immobilize dechorionated zebrafish embryos and generate chemical gradients for acute fish embryo toxicity (FET) tests.

Abstract: Provided herein are new compositions and methods for use in introducing transgenes into cells. The compositions are non-viral but achieve levels of transgene integration comparable to those obtained with viral-mediated methods, and can be used for targeted integration of a transgene at a specific genomic locus.