PDX leukemia in immunodeficient mice show regression after a time. Anyone knows what is going on?

I am performing PDX ALL in NSGS mice, but something curious happens: some leukemias develop very well , but after a time the hCD45+ cells show a huge regression while the mCD45+ cells turn back to...

16 December 2020 7,344 2 View

About the mouse humanization process, why should I wait between four to 24 hours after irradiation to transplant the stem cells into pups?

The protocol for the humanization of the NSG mice with human CD34+ cells demands that mice should be irradiated before the inoculation of the human cells. However, after this procedure, it is...

01 September 2020 8,477 4 View

How to calculate dielectric constant from oil spill in SAR satellite image?

I'm trying to understand how to determine relationship between reflectivity in SAR images and dieletric constant of oil spill offshore registred in image.

17 August 2020 2,094 2 View

What is the best methodology to identify and to quantify different classes of lipids from pollen?

I would like to characterize and quantify different classes of lipids of different samples of pollen. I was thinking to use HPLC or GC-MS. Someone know if these techniques are good for that?...

09 April 2018 3,379 4 View

What is the future of labor law in a future world without work?

Labor law is predominantly carried out from the domestic perspective of the countries through their legislation, accepting only some international (often disregarded) legislative...

23 March 2018 473 6 View

Xenograft of DND-41 cell line in NUDE mice.

I am trying to develop subcutaneous xenograft model in NUDE mice, using DND-41 tumor cells. I already tried sometimes, without success. I am using 100% and/or 50% of matrigel.Someone knows if is...

22 February 2016 7,994 8 View

There is some special condition for culturing BT474 breast cancer cell line?

I am used to work with BT474 cell line. But as I was needing a huge amount of cells, I expanded them in 4 flask T150 during 3 weeks. It is known that the growth is very slow, but suddenly, when...

22 February 2016 2,431 5 View

Do you know any software that can analyze absence/presence dataset from allopolyploid microsatellite data?

12 October 2015 1,282 4 View

Can I supplement the culture medium with mouse serum instead of bovine serum to culture the cells?

13 February 2014 4,745 2 View

Can you suggest a good assay to determine paracellular permeability in epithelial cells?

I am establishing a bovine oviductal epithelial cells culture using inserts of 0.4um pores and I am trying to get the cells polarized with this system. I would like to use the permeability assay...

16 January 2014 7,820 18 View

Why at farmer level Cow/Buffalo are not done artificial insemination just after 2 month for yearly calving?

Physiologically in cow, oestrous heat again goes on the peak after 2 months but locally this is not observed and AI is after two months but done after at least 6 months.

17 February 2021 685 4 View

Possible reasons for high bioavailability after I.M and S.C. routes...?

What should be the possible reasons if we obtained more than 100% bioavailability of antibiotics (marbofloxacin) after I.M. and S.C. routes of administration in cattle species.

16 February 2021 971 4 View

How to determinate phosphatidylcholine content in cow milk?

I would like to determinate the phosphatidylcholine content in cow milk. We only have a Shimadzu Prominence HPLC (High Performance Liquid Chromatography) with a fluorescent detector for the...

18 January 2021 8,370 6 View

How do i prove oocyte incompetence?

the is because the preliminary result of superovulation with (400-560 mcg) stimufol among unflushed cows did not yield any embryos 10 cows each were treated with graded doses of stimufol (400,...

13 January 2021 3,618 2 View

The chemical and microbiological properties of camel milk do have a significant effect on shelf life of camel milk powder compared to cow milk powder?

I need to know effect of heat treatments that are made when making camel milk powder on chemical , microbiological properties and shelf life of camel milk powder compared to cow milk powder. Thanks

11 January 2021 7,097 12 View

What types of tubes should I use for allantoin assay?

Hi everyone, I am doing an allantoin assay in urine and all the protocols seem pretty vague. I am currently using this website which seems to be the most helpful:...

07 January 2021 8,023 3 View

Can you advise reference publications/standards on characterizing animal genetics research and development activities, and the outputs it generates?

I am doing semantic analysis of science and grey literature publications in the field of animal genetics and breeding. I have a standard dictionary but I am not sure if it captures the state of...

31 December 2020 4,924 3 View

What is the role of fresh cow dung in sprouting in stem cutting propagation?

In my personal experience I have find the higher rate of sprouting when fresh cow dung is applied on the top side of cutting what might be its reason.

24 December 2020 4,068 6 View

How to handle milk clotting Issues during media preparation for Screening of Halotolerant Protease Producing Bacteria (with Skim Milk)?

We want to screen halotolerant protease producing bacteria. Since Skim milk (HiMedia) is available in our lab, therefore, we want to screen extracellular protease by this compound/ supplement. We...

04 December 2020 7,657 6 View

How should I store the milk sample in RNAlater?

I want to extract RNA from human breast milk. How should I store the milk sample in RNAlater? And after RNA extraction how can I store the RNA?

01 December 2020 7,183 4 View