Does anyone know the bacterial resistance of pAcYM1 plasmid?

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Why activated CAR-Jurkat cell could not kill targets?

Previously when I co-coluture anti-CD19(FMC63) CAR-Jurkat with Raji with E:T=5:1, Jurkat can eliminate Raji in 24h. However, when I test another CAR construct, although I can dectect totally CD69...

06 August 2024 641 2 View

Recovery rate after peptide desalting using Sep-pack C18 1 cc Vac Cartridge?

Recently I'm trying to use Sep-pack C18 1 cc Vac Cartridge (Waters: SKU: WAT054955) to desalt digested peptides. However, the recovery rate is usually 40-60%. What is the normal recovery rate?

31 July 2024 6,544 11 View

A positively charged and 10x his-tagged protein that doesn't bind to any chromatographic resin?

Hello everyone, I am currently working on a protein that is 10x his-tagged and positively charged (predicted pI=10.16). But when I tried to use Ni-NTA column to purify the protein, it's not...

24 July 2024 7,293 4 View

How to transfect circular mRNA to T cells?

Hello! We are using LNP to deliver circular mRNA into T cells. However, compared with linear mRNA, the transfection efficiency and protein expression duration are similar. Are LNP generation or...

21 July 2024 4,322 1 View

Look for qualified candidates of Visiting Scholars to Southwest Jiaotong University?

We invite qualified candidates of Visiting Scholars to engage in research collaboration or deliver lectures on their research, with travel expenses covered. The visiting period is flexible,...

20 July 2024 1,165 1 View

How can we effectively assess and monitor the health of the soft and hard tissues around implants so that problems can be detected and treated early?

Although I have extensive experience in dental implants and periodontal treatment, I recognize that we face some deficiencies in my clinic. First, we need to update our equipment, especially in...

09 July 2024 2,004 3 View

What is the association and mechanism between bacterial diversity in the oral microenvironment and clinical manifestations of periodontal disease?

This research question explores the complex relationship between bacterial diversity in the oral microenvironment and the clinical manifestations of periodontal disease. The oral microenvironment...

09 July 2024 6,210 1 View

How can technology empower EFL teaching?

Scholars from multiple disciplines stressed the importance of AI Technology in ESL teaching from a theoretical perspective. Are there teaching designs that combine theoretical discussions and...

01 July 2024 999 7 View

The difference between the E. Laviron's model and RICHARD S. Nicholson's model for electrode reaction kinetics?

For the measurement of electrode reaction kinetics and electron transfer rate constant, using E. Laviron's model and RICHARD S. Nicholson's model, the greater peak potential separation indicates...

30 June 2024 580 3 View

Any tips for cell counting in 96-well plate?

Dear colleagues, I am currently using HCT-116 adherent cells for cell culture in 96-well plates and have some questions regarding cell counting. I have tried various methods and found the most...

22 June 2024 1,124 5 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

How to confirm the site-directed mutagenesis result without performing NGS?

I'm cloning a fragment of 3200 nts into plasmid. The cloning was successful, however, 02 amino acids were mutated. Now I want to fix these 02 aa by site-directed mutagenesis technique using...

08 August 2024 4,645 2 View

Is there any way to quantify bacterial and fungal cells in their mixed culture?

I am working in fungal fermentation of soybean meal and there is bacterial growth in them at times. I am trying to quantify fungal cell counts and bacterial cells; but I haven't been able to do at...

07 August 2024 7,535 4 View

Are there instances where molecules with larger molecular weights exhibit greater mobility than those with smaller molecular weights?

Hi, I know that low molecular weight (MW) molecules generally tend to have higher mobility, while high molecular weight molecules tend to have lower mobility. However, in my experimental...

06 August 2024 1,495 2 View

Weak DAPI staining after immunohistochemistry - how to improve?

After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...

05 August 2024 9,637 2 View

Where should the ARS sequence be introduced on a plasmid?

Hi all, I need to introduce an ARS (autonomously replicating sequence) in my plasmid but I'm not sure which position would be the best. Does anyone have any suggestion? A picture of the plasmid...

05 August 2024 1,573 4 View

Why after performing site directed mutagenesis ,I don't see any colony after transformation?

I want to introduce a point mutation (change in one nucleotide) into my gene of interest (DNA binding domain) I have designed primers as recommended on the Data sheet of the kit : -Both primers...

05 August 2024 9,059 3 View

Why my colony PCR results of my recombinant bacterial not showing any results?

I am performing ligation of the plasmid and a target gene. The steps I have taken are: 1. Double digestion of the plasmid and target gene 2. Ligation of the plasmid with the target gene 3....

05 August 2024 2,570 3 View

The Curse of Evolution and Complexity?

Brain and body mass together are positively correlated with lifespan (Hofman 1993). The duration of neural development is one of the best predictors of brain size, and conception is the best...

05 August 2024 6,247 3 View

For an in-vitro drug release study, what molecular weight cut-off (MWCO) dialysis bag is required for a 117 kDa protein?

kindly reply me. Thanking you in advance.

05 August 2024 7,727 4 View