How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

How to extract RNA from brown adipose tissue(BAT)?

30 January 2021 6,610 3 View

How can we test interaction effect using repeated measure design?

Hi! I am currently working on a problem using repeated measure design. Each participant was assigned to two CONDITIONs (A and B). And their GOAL (continuous) were measured twice in condition A and...

25 November 2020 1,235 3 View

When performing mutliple behavioural tests over a period of time, should you habituate the animals before every test or just once at the beginning?

I am doing a baseline + 2 rounds of behavioural testing (NOR + NLR) - so total 3 rounds of testing, all 1 week apart in male SD rats. Is it necessary to habituate them before every test, or is...

17 June 2020 9,083 5 View

Can I use LS column and MidiMACS seperator from Miltenyi Biotec Neutrophil Isolation Kit for mouse peripheral blood?

We are using the neutrophil isolation kit from Miltenyi Biotec to get the neutrophils from peripheral blood from JAK2 constitutively active mice. This mouse is a leukemia model, so the traditional...

11 March 2020 8,611 3 View

Can I use satellite images to detect the leaking and clogging for a Surface Drip Irrigation System?

Hello everyone: I have being searching for three weeks now to find a possible solution using remote sensing. This application is for a vineyard 200m by 300m or even bigger. It has a a surface...

28 February 2020 3,723 5 View

Is it normal that Streptomyces fradiae culture is clumpy/particles/precipitated?

Hello, I cultured Streptomyces fradiae from a freeze-dried sample following ATCC protocol: use 6ml broth (tryptone 5g/l, yeast extract 3g/l) to rehydrate the sample and culture at 26 degrees...

05 February 2020 1,232 3 View

How to check the quality of MgO for magnetic tunnel junction?

I am making some magnetic tunnel junctions, but I always get the junction shorted. I am not sure whether the quality of MgO is good. Does anyone know how to check the quality of MgO? Such as AFM...

28 January 2020 139 2 View

Implement Topshim (Bruker NMR) shimming commands in IconNMR?

With Bruker's Topshim program, I have used the following command to shim every new sample: topshim z6 1d optsolvent coil=1H tuneb tunea Now I'd like to use IconNMR to automate this procedure,...

20 August 2019 1,111 5 View

How to dissolve and inject 4-hydroxytamoxifen to nude mouse?

What is the normal way to inject 500 ug 4-hydroxytamoxifen per mouse? Is it dissolved 4-OHT in ethanol and diluted with peanut oil at least 10 times?

10 May 2019 3,301 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

Why might my GFP tag be dissociating from my plasmid after transfection?

I have a set of stably transfected cell lines all transfected with plasmids containing GFP tags on the C terminus. During a western blot using anti-GFP antibody, one of my plasmids has dissociated...

01 March 2021 9,310 4 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

What is the most suitable server for predicting protein structures in bacteria?

I have used the i-Tasser several times, however it has been unavailable for several days. I tried the swiss-model, but the output was not very pleasant due to the model used. Is there any other...

28 February 2021 4,521 3 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

Are protein samples in SDS compatible with ELISA?

I have used an AllPrep DNA/RNA/Protein Mini Kit QIAGEN kit to extract RNA and protein from my samples. At the end of the protein purification, I resuspend my protein in 5% SDS. Will these samples...

28 February 2021 7,370 3 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Problem with ligating 2.8 kb insert into 8.5 kb plasmid?

I am trying to clone 2 copies of the same mammalian gene into the pSF-CMV-Ub-Puro Ascl (contains HindIII, KpnI and NheI cut sites) plasmid. This is what the final product is supposed to look like...

24 February 2021 6,310 3 View