Meeting URL
A front-end for HBCSE web conferencing server. You can create your own rooms to host sessions, or join others using a short and convenient link.
Please click on the HBCSE Webinar above to join the CUBE ChatShaala
Timing:5.30 pm to 9.30 pm
Webinar will be recorded and recording link will be post in the same thread after the webinar.
Looking forward to your participation.
Thanks
CUBE ChatShaala on 27th December 2020
27 CUBists from 23 Centres had joined the webinar
Map
ASSAM
Jorhat: Ishita Sonowal
Sonari: Susanta Tanti
DADRA AND NAGAR HAVELI
Silvassa: Jeene Jimmy
DELHI
Dyal Singh College: Dr P. Chitralekha
JHARKHAND
Ranchi: Manjuel Jojo
Morabadi, Ranchi: Rechel Tirkey
KERALA
The Cochin College, Ernakulam: Aarcha Soman, Aishwarya Elizabeth, Ashikha Farzana
Kozhikode: Arunima
Thriprayar, Thrissur: Aswathy Suresh
Thanniam, Thrissur: Sidhy PP
MAHARASHTRA
South Bombay: Arunan MC
Nerul: Drishtant M Kawale
Powai: Lydia Mathew
Andheri, Mumbai: Mandar Chavan
NES Ratnam College, Mumbai: Meenakshi K
Dahanu, Palghar: Sachin Pradhan
Prabhadevi, Mumbai: Yash Sheregare
PUNJAB
Chandigarh: Rajiv Kocchar
UTTAR PRADESH
Kanpur: Hina Mudgal
Moradabad: Kiran Yadav
WEST BENGAL
Garden High School, Kalyani: Aranyak Sarma, Koulab Mukherjee
Kolkata: Batul Pipewala, Sukriti Maity
UNKNOWN AFFILIATION
Zainab
Olfactory Assay
How to compare the olfaction of Native fruit flies and standard CsBz strain of Drosophila melanogaster Larvae.
We had discussed that what’s the objective to compare olfaction?..
@saswathy679 @Lydia Drosphila discovered that what could be the alternative to perform olfactory assay in cube home lab…
Right hand side drawing shows Rava plate/ olfactory which needs to calibrate?.
@saswathy679 had very well explained how to calliberate olfactometer…
Amazing a plate can act as an instrument…
Discussion has led to understand what an olfaction? What conclusion we can make when we compare olfaction of two different single line Cultures of fruit fly…
How to make dilution?
An interesting discussion on innate immunity of zebra fish…
How to differentiate in between fertilized and unfertilzed eggs?..
What’s an egg?.
Both the kinds of egg are prone to bacterial or fungal infection, but fertilized eggs can save itself by eliminating pathogen through phagocytosis whereas unfertilzed egg fails to do this and Hence got dicomposed by bacteria…
What’s the no. Of chromosomes in Human?..
How innate immunity is different from acquired immunity?.
References shared during the cube chatshaala discussion for innate immunity in Zebra fish…
1. As early as one day after fertilization (dpf), zebrafish embryos display phagocytic activity towards
microbial infections [12] and are able to mount an innate immune response
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395205/
2. Pathogen Recognition and Activation of the Innate Immune Response in Zebrafish
Michiel van der Vaart, Herman P. Spaink, and Annemarie H. Meijer
*https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395205/
3. Herbomel P, Thisse B, Thisse C. Ontogeny and behaviour of early macrophages in the zebrafish
embryo. Development. 1999;126(17):3735–3745. [PubMed] [Google Scholar]
4. Development
1999 Sep;126(17):3735-45.
5.Ontogeny and behaviour of early macrophages in the zebrafish embryo
P Herbomel 1 , B Thisse, C Thisse
6.The haploid zebrafish genome has 25 chromosomes, most of which are difficult to distinguish. These
chromosomes contain about 1.7 X l09 base pairs of DNA, about half the mammalian genome
size.https://www.sciencedirect.com/science/article/pii/S0091679X08618981
7.Zebrafish have 25 chromosomes and their genome consists of about 1.5 x 10 billion basepairs,
compared with mammalian genome sizes of about 3 x 10 billion basepairs. It is currently unknown how
many genes there are in the zebrafish, but it is very likely that the total number will be very close to the
one expected for mammalian genomes.
%20lay,hours%20of%20normal%20zebrafish%20development.&text=Zebrafish%20have
%2025%20chromosomes%20and,3%20x%2010%20billion%20basepairs.
8. Zebra fish larvae develop innate immune cells within 2 days post fertilization (dpf) while the adaptive
immune system is not present until approximately 3 weeks post fertilization (10, 11), making it a
favorable model to study innate immune-dominant responses.Sep 5,
2020https://www.researchgate.net/publication/51675430_Zebrafish_Model_for_the_Study_of_Inflammat
ion_and_the_Innate_Immune_Response_to_Infectious_Diseases
9. After fertilization, larvae survive with only the innate immune responses because adaptive immune
system is morphologically and functionally mature only after 4-6 weeks postfertilization. This temporal
separation provides a suitable system to study the vertebrate innate immune response in vivo,
independently from the adaptive immune
response.https://www.researchgate.net/publication/51675430_Zebrafish_Model_for_the_Study_of_Infla
mmation_and_the_Innate_Immune_Response_to_Infectious_Diseases
10. It was recently shown that zebrafish embryonic macrophages efficiently engulf E. coli bacteria from
blood- and fluid-filled cavities, while neutrophils are hardly capable of phagocytosing bacteria present in
fluids https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395205/
In today’s session, we discussed about how we can distinguish between a fertilized egg and an unfertilized egg. And what happens after an egg is not fertilized? We established that it decomposes due to microbes which can’t affect the fertilized eggs because after fertilization, they develop an innate immune response which helps them survive such microbial attacks.
Innate (natural) immunity is so named because it is present at birth and does not have to be learned through exposure to an invader.
Innate immunity, unlike acquired immunity, has no memory of the encounters, does not remember specific foreign antigens, and does not provide any ongoing protection against future infection
Why is Zebrafish used to study immune response? !
After fertilization, larvae survive with only the innate immune responses because adaptive immune system is morphologically and functionally mature only after 4-6 weeks postfertilization.
https://www.researchgate.net/publication/51675430_Zebrafish_Model_for_the_Study_of_Inflammation_and_the_Innate_Immune_Response_to_Infectious_Diseases
By Ishita
The follow up questions that came forward were about @tejashri 's zebrafish
• why did the 5 fertilized eggs did not hatch into larvae?
•how do we count the number of larvae?
•what could be said about the microbial growth in the water and how it’s being avoided?
