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Guava Technologies Guava Cell Cycle Assay, Arryx s BioRyx 200 IR, and Genetix s aliQuot Low-Volume Liquid Dispenser

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Guava Technologies today introduced the Guava Cell Cycle assay. The Cell Cycle assay uses the nuclear stain propidium iodide to discriminate cells at different stages of the cell cycle, Guava said, with incubation times as short as one hour. The staining reagents are pre-combined in a single format, and the assay provides detailed protocols for use in individual tubes or 96-well microliter plates. Three histogram markers distinguish the G0/G1, S, and G2/M cell cycle phases, while an optional fourth marker can identify apoptotic cells, cell aggregates, or an internal standard, Guava said.


Arryx has added the BioRyx 200 IR system to its line of BioRyx 200 optical trapping systems, extending the product line into the infrared. The BioRyx platform is 3D holographic laser tweezer technology that features real-time trapping software, and confers the ability to manipulate microscopic objects such as blood cells, cancer cells, DNA, and nanotubes, while simultaneously recording fluorescence from a broad range of dyes, Arryx said. The system can be configured with a variety of components, including epifluorescent illumination, total internal reflection fluorescence, laser cutters, dark field imaging, phase contrast imaging, or low-light cameras, Arryx said.


Genetix has introduced the aliQuot low-volume liquid dispenser with automated stacker for the controlled dispensing of cells, Genetix said last week. The aliQuot’s valve and manifold system eliminates damage to cells associated with traditional pump and valve mechanisms, Genetix said. The product is designed for dispensing liquid or suspension in the 1 to 350-µl range into 96-, 384-, and 1,536-well plates, Genetix said.

The Scan

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September Plans

The New York Times reports that the US Food and Drug Administration is aiming for early September for full approval of the Pfizer-BioNTech SARS-CoV-2 vaccine.

Nucleic Acids Research Papers on Targeting DNA Damage Response, TSMiner, VarSAn

In Nucleic Acids Research this week: genetic changes affecting DNA damage response inhibitor response, "time-series miner" approach, and more.