Can you supply me the names of aquaculture species, whose draft genome sequences were published?

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How to prepare protein samples in EMSA assay?

Recently l was studying EMSA assay, but l didn't find any detailed information about protein sample. we can use two kinds of protein, including crude protein extracts and recombinant proteins. but...

02 February 2021 10,047 3 View

How can I transform 50 kb plasmid into ecoli?

I must put 50 kb plasmid into ecoli strain. I think 50 kb is too big for heat shock with ecoli. Is that correct? Will electroporation work? Or do I need to use cos sites and lambda phage...

22 January 2021 8,612 3 View

Bacteria strain received has fungal contamination -- how remove?

I received several strains of bacteria from another lab far away. However, one of the samples appears to have high fungal contamination. When I grow it in broth, I see lots of fungal...

03 January 2021 2,749 16 View

New knockout bacterial strain: Can't electroporate it?

I made a new bacterial strain with an unmarked deletion using 2 step homologous recombination (with sacB counterselection). The full protocol is given in the link at the bottom. The protocol...

01 January 2021 1,580 4 View

Western blot: what causes patchy, uneven background?

Sometimes my western blots have very uniform/even background, other times they're very uneven and patchy like in the attached image. Why is this? I thought my blots were drying out during...

05 December 2020 8,656 5 View

Licor Intercept Blocking Buffer -- sterility and reusing antibody dilutions?

In the past, I've always used Licor's old blocking buffer that included sodium azide. I would dilute my antibodies in the buffer, stain, re-collect the dilution, and re-use it a few times. The...

28 November 2020 5,795 3 View

What mutations in oriE increase the plasmid copy number?

I have a low copy plasmid (ori=pBR322) and I wanted change it to high copy (like ori=pUC). This paper seemed to say that only one mutation was required to increase the copy number: High copy...

13 November 2020 7,292 4 View

Western blot: adjusting volume of buffer for blocking/staining?

For western blots, I normally stain with 10 mL buffer with 1:1,000 dilution of my specific antibody. Recently, there is an equipment change in my lab and 10 mL isn't enough volume to cover the...

27 October 2020 2,749 7 View

Why DMEM color is changed?

Why the pink color will change to yellow, when the DMEM media is frozen? however after dissolution in room temperature, media color will change back into pink.

26 October 2020 708 2 View

Concentrating protein: comparison of methods?

I must concentrate and purify a lot of dirty lysate and secreted protein samples. I just want to run them on protein gels for western blots. I'm trying to decide the best method of...

10 September 2020 2,911 8 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Could you please recommend some good journal that accept very long revie papers (approximately 6000+ words) in neurosurgery, cancer biology ?

01 March 2021 8,087 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

Good morning research fellows, Has anyone worked with senna alata plant extract on any kind of fish?

Literatures on the piscicidal effect of sennaa alata is scanty. if you have any related litrature either in the bark, leaves or roots used as treatment to any aquatic organism please kindly help...

28 February 2021 9,138 2 View

Runs of nucleotides in Sanger sequencing?

I performed site directed mutagenesis, transformation, and then I sent out plasmids for Sanger sequencing and found out that there is extension of DNA just before the stop codon. I am not sure...

27 February 2021 547 3 View