How do you lyse small cells (10 microns) without disrupting the mitochondria?

We consistently isolate intact/functional mitochondria from liver and heart tissue using manual homogenization (to disrupt the cell membrane) followed by differential centrifugation. I am now...

04 November 2019 9,279 1 View

In your research with OrganoTropisms are you utilizing tissue culture or histology slides?

Tropisms for various organ systems by borreliae have intrigued me for many years. In my research I have utilized autopsy tissues and tissue cultures for examination with Immunohistochemistry and...

17 March 2019 773 1 View

Can I simplify a (ols or logit) model by combining a number of variably related variables into an index?

To be more specific: my goal is to demonstrate that the effects of X1 on Y is not entirely accounted for by attitudes towards various out-groups. The latter items include measures of positivity...

21 October 2018 1,830 2 View

How do hallucinogens work on the brain?

Robin Carhart-Harris, Mendel Kaelen and David Nutt consider a big questionon several levelsDoes self-organised activity in thedefault mode network underlie oursense of self or ego?

07 August 2016 7,296 0 View

Why are we conscious?

07 August 2016 5,818 2 View

Should we have a basic income in the UK?

07 August 2016 1,723 0 View

What system mediates and incorporates all the potentially competing signalling of the brain?

Does the brain work in harmony, for example in a way where signals work up a chain of command and through the way the modularities of the connectome are integrated they are all given a proportion...

07 August 2016 4,341 0 View

The processing power of the brain, way-beyond binary; Could a Turing like machine decode the encryptions of the human brain?

We clearly process information, the neurochemical signatures are a way neuronal communication occurs between modulars of the brain. We have at least 50 neuro communication chemicals, that is...

07 August 2016 4,129 0 View

Can I add new items with smaller Ns to a scale composed of items with larger Ns?

I launched an online survey of personal religiosity in April and have since received entries from almost 700 respondents (hoping to reach 1,000+). At approx. the 600th respondent mark, I added...

04 July 2016 4,155 3 View

Is there a model-theory for a model of potential factors influencing the development of students' competency (university development, didactic)?

Due to the specific way in which higher education is organized, any course of studies promotes the development of competences, which might seem, at first sight, beyond the grasp of didactics of...

04 May 2015 8,014 11 View

Buffer to disrupt platelet alpha granules for PF4 quantification?

Hello! I want to quantify by ELISA the secreted (from platelets poor plasma) and the non-secreted (from platelet lysate) PF4 before and after TRAP stimulation. I will use the ELISA from R&D...

03 March 2021 1,499 2 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 3 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Why are my bands weird in this Agarose gel?

Can someone please give me some possible things that could go wrong? Here is my recipe: 0.5g Agarose 50 mL of TAE 1x 1 uL ethyl bromide. Gel was run at 100V for 1 hour. The buffer used is also TAE.

01 March 2021 9,952 3 View

What do I do with DLS peaks that are from the buffer?

I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...

01 March 2021 9,015 2 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

What is the most suitable resuspension buffer for TCA/acetone precipitated protein?

I need to extract protein from fermented carbon sources for Bradford assay. Most researchers experiencing insolubility of pellet in resuspension buffer. Please assist me to select most suitable...

26 February 2021 7,129 3 View

What urea buffer can i use for biotagged protein extraction from streptavidin beads?

Hi all, I have been doing research on biotagged LDB1 proteins in Mel cells. I purify the proteins using M280 streptavidin beads. The yield is very low so I've been trying to optimize it by...

24 February 2021 5,749 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View