Hi, I am growing 30 mL of FreeStyle CHO-S Cells in a 100 mL spinner flask (or spinner vessel). The protocol says to grow cells in 125 mL Erlenmeyer culture flasks at 125 rpm. I would like to know at what speed should I set the spinner flask? Thanks!
Hi everyone! I am trying to find the "how to" on item difficulty and discrimination on SPSS and its interpretation. I have read about and performed the command analyze> scale> reliability...
21 September 2020 4,040 3 View
I'm looking for something similar to the Economic Freedom of the World Index but measuring Populism... I do not know if it exists. Thank you
22 June 2020 4,460 8 View
Who knows how can I estimate and graph the marginal effects from an interaction model -regression data panel- in EViews10.0. Y = X + Z + XZ I need to graph the marginal effect of X on Y...
07 April 2019 2,013 1 View
So i'm trying to use molecular sieves to dry methanol, but i can't find a good tutorial on how to do it, any help would be greatly appreciated.
10 February 2019 299 3 View
I need a working protocol to extract DNA from Salmonella colonies.
07 June 2018 7,384 3 View
Contributions of the mechanical energy to the renewable energies (Utilization, discovery, creation, etc)
08 April 2018 8,984 5 View
Hi, I am new to primary cell culture and I'll be working with chicken-derived dendritic cells. I'll be using GM-CSF and IL-4 to induce their maturation in 6-well plates with RPMI-1640 media. I...
05 February 2018 3,940 4 View
Hi, I'm working on a project where the main objective is to measure the maturation markers of chicken-derived dendritic cells. Naturally, I am looking at CD40, CD80/86 and MHCII markers via flow...
05 February 2018 2,475 3 View
Dear RG community: I am currently working on an ecological study in order to analyze disease burden from cancer in my country. I am looking for the most suitable indicator of disease burden....
23 January 2018 8,059 11 View
Hello all, I'm trying to make GBS libraries for damselflies. I'm using Pstl enzyme and everything looks good, but when I analyze the library in the bioanalyzer, there is a strange pike at ~200pb,...
04 April 2017 200 3 View
I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...
25 February 2021 3,030 1 View
Using a Nova bioprofile (https://www.fannin.eu/wp-content/uploads/2018/07/BioProfile-Flex.pdf) to sample my CHO culture daily I get various metabolite results and also pO2 and pCO2 results. I am...
13 December 2020 7,998 1 View
Hi! Everyone! This is Toxicology researcher in South Korea. I'm looking forward cell about CHO AS52 cell line. We need AS52 cell to do toxicity studies. unfortunately here is no way to get...
17 August 2020 6,043 1 View
I would like to know if any of the following Gangliosides are present on the cell surfaces of enlisted cell lines. Gangliosides : GM1, GD1a, GD1b, GT1b & GQ1b Cell lines :HLAC-78, THP-1,...
06 August 2020 8,092 3 View
I'm going to be sub cloning CHO cells but I need some advice on what to look for. These clones will then enter an AMBR 250 for selection of best performing clone, where we will pick the best and...
15 March 2020 2,172 2 View
I am getting the transition transfection of RSV in CHO S cells by doing Elisa. But after selection almost all the cells are dying. Please suggest what to do? Even we tried less concentration of...
31 December 2019 3,055 2 View
Hello, I'm working on purifying human recombinant protein in an E.coli system. After several purification steps, I analyzed purified proteins with the Waters HPLC with SEC columns, but my protein...
09 October 2019 595 6 View
Hello all: I'm trying to isolate a protein I am expressing in CHO cells. The protein is secreted into media and the two isoforms are either 20 kda or 30 kda. However, there are serum proteins I'd...
20 August 2019 3,594 10 View
I have problem in cho cell scale up. Cells grow well in 5000L bioreactor and reach to more than 20milion cells per ml like 1000L but OUR and Glucose consumption and QP decrease dramatically Seems...
07 August 2019 1,187 4 View
I know about advantage of PER.C6 such as: (1) Superior yield, (2) Adequate human post-translational modifications (PTMs), (3) High transfect ability, (4) High safety, (5) Simple and flexible...
07 August 2019 9,998 4 View