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A Novel Fluorescent pH Probe for Expression in Plants - http://www.plantmethods.com/content/2/1/7

Category: Plant Biology Protocols: Plant Proteins, Peptides and Antigens

The pH is an important parameter controlling many metabolic and signalling pathways in living cells. Recombinant fluorescent pH indicators (pHluorins) have come into vogue for monitoring cellular pH. They are derived from the most popular Aequorea victoria GFP (Av-GFP). Here, we present a novel fluorescent pH reporter protein from the orange seapen Ptilosarcus gurneyi (Pt-GFP) and compare its properties with pHluorins for expression and use in plants. - [Read A Novel Fluorescent pH Probe for Expression in Plants]

Analysis of Flow Cytometry Data Protocol - https://catalog.invitrogen.com/index.cfm?fuseaction=iProtocol.unitSectionTree&treeNodeID=9E661C2CE22FCCB1C294CD8376FD8830&objectid=6674E762AC837B13929440A1F32AAEF0

Category: Cell Biology and Cell Culture: Flow Cytometry Protocols: Flow Cytometry Data Analysis Protocols

Provides several approaches to flow cytometry data analysis. Frequency determinations based on analysis of single-parameter fluorescence histograms and dual-parameter contour plots are presented. Steps are described for calculating values for signal-to-noise ratios when logarithmic amplification is used for data collection. - [Read Analysis of Flow Cytometry Data Protocol]

Cytoskeletal Alterations as a Parameter for Assessment of Toxicity - http://embryo.ib.amwaw.edu.pl/invittox/prot/24.htm#TOP

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols

Changes in the balance of cytoskeletal proteins after exposure to test compounds can be detected by indirect immunofluorescence microscopy and quantitative biochemical methods. - [Read Cytoskeletal Alterations as a Parameter for Assessment of Toxicity]

Feeder Cell Density - A key Parameter in Human Embryonic Stem Cell Culture - http://www.bioone.org/bioone/?request=get-document&issn=1543-706X&volume=040&issue=08&page=0255

Category: Cell Biology and Cell Culture: ES Stem Cell Biology and Culture: ES Cell Growth Media and Requirements

Feeder Cell Density - A key Parameter in Human Embryonic Stem Cell Culture - [Read Feeder Cell Density - A key Parameter in Human Embryonic Stem Cell Culture]

Purification of Histidine-Tagged Proteins Using IMAC Without Parameter Optimization Protocol - http://www.cshprotocols.org/cgi/content/extract/2006/1/pdb.prot4217

Category: Chromatography Protocols: Immobilized Metal Ion Affinity Chromatography Protocols

Histidine-tagged proteins can be purified on prepacked 1-ml immobilized metal-ion affinity chromatography (IMAC) columns without optimization of the separation conditions. The method allows fast capture of the target protein, although with a lower purity than can be obtained under optimized conditions. - [Read Purification of Histidine-Tagged Proteins Using IMAC Without Parameter Optimization Protocol]