Brown color on plant tissue after fixation with FAA?

I have used FAA fixative (10% Formalin, 5% Acetic Acid, 50% Ethanol) to fix tomato apices for in situ but after fixation and 30 min vacuum infiltration the tissue becomes red-brownish. Do you know...

08 September 2016 8,810 4 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

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

Is there any published or unpublished statistics on dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, US, UK or any other country?

Are there any published or unpublished statistics or papers on the dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, USA, UK, or any other country where vaccination has started at...

28 February 2021 4,237 1 View

If a given country passes mandatory 'vaccine passport rule' to go outdoors, otherwise stay at home, can it help to vaccinate all against COVID-19?

Wether vaccine passport declared not to go out of home without it may help taking COVID-19 vaccine. Can't it break individual's right to protect the community? Your comments on perspectives...

27 February 2021 5,549 23 View

Can cells be reused after using WST 8/ CCK 8 from Sigma Aldrich?

Hi all, Can cells be reused after I have seed them onto 96 well plates and test them with cell counting kit at OD450 (CCK8) at 12 hours, wash them with PBS x3 and add new media and let them...

24 February 2021 5,072 1 View

Any Differences in COVID-19 vaccines?

Are there any differences (outside of the clinical trials that led to their EUA) observed in the rate of infection among those who have received the Pfizer vs Moderna vaccine since the mass...

22 February 2021 9,727 6 View

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22 February 2021 9,932 11 View

Is it okay to mention you distributed your qualitrics study link through social media sites?

Just want to be clear and know it is okay to say I have distributed the qualitrics link through social media such as Facebook, Instagram and Twitter to ensure my target audience is reached in my...

21 February 2021 5,143 2 View

What is the minimum number of exosomes/ml to have a good yield of total RNA for Illumina sequencing?

I am using IZON qEV2 columns to isolate exosomes from 100 ml of cancer cell conditioned medium. in NTA analysis I usually see concentration of 2x10^9 particles/ml. But when I proceed with this...

20 February 2021 6,879 3 View

Any suggestions or recommendations on a good publishing house based on the African for academic books in the field of Communication and media studies?

I am currently working on a book on Public Relations (from an African perspective) and the rationale behind the book is the fact that as instructors in this field, we borrow instances and case...

19 February 2021 2,482 2 View