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https://www.selleckchem.com/products/trolox.html There were no differences in cell viability, density of neurons or microglia. The densify of visible short branches of microglia in live imaging was higher in collagen membranes than PTFE membranes. Collagen membranes are suitable for live imaging of cellular dynamics in slice cultures using an inverted microscope. Collagen membranes are suitable for live imaging of cellular dynamics in slice cultures using an inverted microscope.Inducible degron systems are widely used to specifically and rapidly deplete proteins of interest in cell lines and organisms. An advantage of inducible degradation is that the biological system under study remains intact and functional until perturbation, a feature that necessitates that the endogenous levels of the protein are maintained. However, endogenous tagging of genes with auxin-inducible degrons (AID) can result in chronic, auxin-independent proteasome-mediated degradation. The ARF-AID (auxin-response factor-auxin-inducible degron) system is a re-engineered auxin-inducible protein degradation system. The additional expression of the ARF-PB1 domain prevents chronic, auxin-independent degradation of AID-tagged proteins while preserving rapid auxin-induced degradation of tagged proteins. Here, we describe the protocol for engineering human cell lines to implement the ARF-AID system for specific and inducible protein degradation. These methods are adaptable and can be extended from cell lines to organisms. © 2020 The Authors. Basic Protocol 1 Generation of ARF-P2A-TIR1 progenitor cells Basic Protocol 2 Designing, cloning, and testing of a gene-specific sgRNA Basic Protocol 3 Design and amplification of a homology-directed repair construct (C-terminal tagging) Alternate Protocol 1 Design and amplification of a homology-directed repair construct (N-terminal tagging) Basic Protocol 4 Tagging of a gene of interest with AID Alternate Protocol 2 Establishment of an ARF-AID clamp system Basic

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