How can I prepare calcium dipicolinic acid (Ca-DPA) and dodecylamine in Buffered Sodium Chloride–Peptone Solution pH 7.0?

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RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

How can I improve Gibson Assembly's efficiency?

In my undergraduate research project, I require an integrative plasmid containing GFP with an antibiotic resistance that can't be kanamycin. In our lab, all of our integrative-GFP-containing...

14 May 2024 9,861 3 View

How to improve 260/230 ratio in rna extraction for PCR?

The 260/280 ratio is ok between 1.8 and 2.0 however we were unable to advance due to the 260/230 ratio

13 May 2024 7,643 3 View

MorphoJ is not giving me the results of Canonical Variate Analysis. What I do?

When I request MorphoJ to do a CVA, it gives to me only the graphics, but no results.

27 March 2024 1,672 1 View

Why the best blocking solution to blot?

We already used milk: 5% to 1 hour, 7% to 2 hour, 10% to 1h, 5% overnight, but, , in all blockages it still marks the entire membrane, every run, there is a large band with no specific mark HELP

20 February 2024 7,346 0 View

What are the two main categories of diagnostic tests for HDV and what distinguishes them?

In relation to the systematic review and meta-analysis of Zhenzhen Pan et al. (2023) about the Diagnostic Efficacy of Serological Antibody Detection Tests for Hepatitis Delta Virus.

06 February 2024 359 4 View

What is the preparation of culture medium for C6/36 cells?

Hi, i´m working with C6/36 cells Do you have a manual for preparing growth and maintenance medium for C6/36 cells? What is the CO2 concentration and temperature that you use in the incubation? please

04 February 2024 7,525 1 View

What is the best way to homogenize spinal cord for blot?

I'm going to use the RIPA buffer, but I don't know if I should use the sonicator or polytron homogenizer

30 January 2024 7,432 1 View

What is the best way to do a cytokine blot?

I am trying to do a western blot of cytokines (iL-10, IL-6) of muscle tissue, using a strip of lysis buffer, 50 ug of proteins and blocking in 5% skimmed milk, however no signal appears, any tips?

24 January 2024 7,021 2 View

Help me! Modeling for past and future scenarios?

Hello, I am modeling for a species across Last Glacial Maximum, Mid-Holocene, present, and future scenarios in Maxent. I input the layers for the present scenario in the 'Environmental layers' and...

28 December 2023 8,556 0 View

AMAXA Lonza nucleofection lower volume of buffer?

Does anyone tried to do nucleofection with AMAXA by Lonza with lower than recommended amount of buffer in the cuvettes (100 ul)?

07 August 2024 4,616 0 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under op microscop?

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under optical microscope?

07 August 2024 2,132 3 View

Why I can't see any band in SDS-PAGE?

Currently, when I run SDS-PAGE, I don't see any bands at all, even though I used the same material just a day ago and it worked fine.... In our lab, we dilute the 10X running buffer to 1X and...

06 August 2024 5,373 2 View

How to assess the osmotic power of a substance?

Hello, I suspect that a molecule I am using is causing bacteria to experience osmotic shock. What chemical properties should I look for to compare this capability with those of other substances?...

06 August 2024 977 1 View

Determining the worth of a point improvement in Hamilton Depression Scale?

Dear readers, Thanks for your attention. I am wondering about the health economic problem of quantifying the value of interventions which a) prevent, b) improve symptom profile and c) ultimately...

05 August 2024 3,246 1 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds?

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds

04 August 2024 3,019 3 View

What is the best blank for nanodrop if I want to read a recombinant protein concentration?

Is it the "elution buffer" or the "dialysis buffer"? Note: I'll be using NanoDrop OneC

01 August 2024 967 3 View

Looking for help on sem image analysis?

Hello I am conducting a microstructural analysis of a soil treated with lime. The following sem images are of the untreated s1 and treated soil s3. The untreated soil contains quartz calcite...

01 August 2024 572 0 View