What are the effects of longer exposure to siRNA (for KD)?

1) I knocked down a protein and collected cells 24 h and 72 h after transfection with Lipofectamine (to note, 5 h after transfection medium was replaced with medium with FBS). 2) KD efficiency...

08 December 2020 9,850 1 View

Why is hard to produce antibodies that are specific to a protein?

Some antibodies reveal nonspecific bands when a western blot is performed. Why is hard to find a good antibody for a protein? Antibodies produced using as the immunogen a synthetic peptide or a...

03 December 2020 208 3 View

Why different antibodies for the same protein stain different places?

I tried two antibodies and one show stain in the cytoplasm and the other one in the nucleus. Why? (Blue - dapi; red - mitochondria; green - protein of interest) And why is hard to find a good...

24 November 2020 6,612 7 View

Do you have experience visualising multiplex amplification curves in LightCycler 480 Sw??

We are using Cobas z480 for multiplex RT-PCR using 3 taqman probes FAM/VIX/CY5. Once the PCR finish we want to see in the amplification curve the three results for each sample at the same time....

28 October 2020 8,372 1 View

TEACHING ESL in the lockdown - participants needed?

Dear English lecturers (teachers, instructors), I am conducting research into ESL teaching to increase our understanding of how teachers have experienced special teaching conditions during the...

14 October 2020 7,223 6 View

Why does mitotracker red stains the nucleus?

I'm working with NT2 cells and I use mitrotracker red (400 nM) to stain the mitochondria. I incubate it with cell medium for 30 min, fix with 4% PFA, permeabilize with PBST (0.2%-0.5% Triton...

11 August 2020 8,076 3 View

What psychometric properties should be reported for a translated version of a questionnaire?

Dear collegues, I performed a cross-cultural study using two questionnaires (66 and 12 items). The original version of these questionnaires was used in the first country, and these tools were...

27 April 2020 4,097 9 View

USRP N210_ RF1 and RF2 dont work ?

Hi, I am working on USRP N210 and Matlab 2016R. I want a transfer a Sinusoidal wave from one port of Antenna and want to receive same wave from second Antenna at one USRP N210 (unfortinaly I...

28 January 2020 5,568 3 View

Problem in modulating miRNA expression (both over-expression and knock-down) in mouse cell lines?

Hi everybody, we are working with let-7 family and we would like to perform knock-down of the let-7 using Lin28 expression vector. In another experiment we would like to over-express let-7g from a...

20 September 2017 9,420 2 View

Can anyone help with a PCR insertion/deletion genotyping problem?

09 July 2014 4,184 3 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

SDS page software for analysis?

I did sds page to determine the difference in protein expression between 3 types of vaccine , but i don't have scanner or densitometer available. . so i wonder if there is a software to analyze...

02 March 2021 6,270 3 View

Which of the Covid-19 Vaccines would elicit the best immunoprotection and why?

I want to know which of the available Covid-19 Vaccines would elicit the best immunological response and why

02 March 2021 1,388 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is the sinovac vaccine safe and effective for people over the age of 60 ?

Dear respective researchers, I was asked by my institution to be vaccinated this week using the sinovac vaccine. However, from some of the information I got, this vaccine is not recommended for...

01 March 2021 7,781 6 View

How vaccines of covid 19 work?

Millions ask how vaccines of covid 19 be successful and safe, its here to explain generally how vaccine of pfizer work ,mRNA vaccines teach our cells how to make a protein that will trigger an...

28 February 2021 2,723 4 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

Does anyone use antinuclear antibody (ANA) and anti-Phospholipid antibody ELISA kit for Non Human Primate serum samples?

I am looking for anti-nuclear antibody (ANA) and anti-Phospholipid antibody ELISA kit for Non Human Primate serum samples. Any suggestions highly appreciated. Thank you.

28 February 2021 6,512 3 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

Anyone know of a good progesterone antibody?

I am looking for a good progesterone antibody to quantify levels of progesterone in zebrafish. Applications would be ELISA, and immunohistochemistry.

28 February 2021 5,929 2 View