Type IV Hypersensitivity Reactions: Features and Mechanism (FL-Immuno/88)

This video lecture explains type 4 hypersensitivity reactions.
Cell-mediated Hypersensitivity
Delayed Type Hypersensitivity
Contact hypersensitivity
Mechanism

[@kathleenhillinger7027]

Normally I am not writing comments, but here... I HAVE to. The last three days I watched all of your immunology videos (1-88) and I’m finally at the end. I’m a 3rd year medical student, having my final exam on immunology next Tuesday.. I’m so glad I found your videos, they are so helpful and it was easy to follow the content. Keep on with your very good work, a lot of students really appreciate your short but precisely videos. You didn’t cover all the questions from my syllabus for next week, but more than 50% for sure. THANK YOU, you saved my time and therefore I am really glad. Don’t stop, even if there are not sooo many watchers, subscribers and likers out there. Thank you!!!!!

[@janvithakkar3174]

Today i have completed all 88 video lectures and i am glad i found this channel. My basics are cleared and by animation i remembered everything. Thank you very much for excellent content!!!

[@knoxtunes4560]

Finally done with this Playlist Thank you Frank🙌

[@atiyamaqbool6390]

Thank you so much for these lectures 😍

[@halaalabboud480]

You’re the best, your videos are easy to follow and really helpful 👌🏻👌🏻

[@FrankLectures]

Thank you for your valuable feedback.

[@user-ss2dj5so2y]

really good explanation thanks

[@mhamidusman]

great presentation

[@rawan_hamamreh]

thanks for sharing your knowledge

[@user-qx6nh6sj2s]

best lecture thank you so much

[@jacobvandijk6525]

A very nice series of videos. Thanks for sharing your knowledge!

[@FrankLectures]

Thanks

[@bobariho2921]

Thanks. The videos are so good

[@khaleelzainel2543]

Thank you very much for this excellent explanation 👍👍🌹🌹

[@ebhawesh]

Thanks for such a great explanation video

[@FrankLectures]

Thanks

[@zeba_ansari16]

Thanks for uploading..its very helpful and informative

[@FrankLectures]

Thank you for your feedback.

[@hendmahmoudallam9001]

Great!! 👍 Thanks alot

[@justlovehz]

Thank you so much you are life saver 😍😍

[@FrankLectures]

Thanks

[@yogayantra]

thank you again.

[@FrankLectures]

You're Welcome

[@shwetapatel-bq4st]

Very nicely explained.... Thank u..

[@FrankLectures]

Thanks

[@nisargashridhar826]

Thank you so much for this wonderful Vedios.. It is very helpful..... Can you make Vedios on plant and industrial biotechnology..

[@mustajabalam3794]

Great ...Plz upload videos on autoimmune disorders

[@mustajabalam3794]

Explained well

[@FrankLectures]

Thanks

[@ramchandrasuthar2848]

Very nice lecture
Great analysis

[@FrankLectures]

Thank you for your feedback.

[@pranav6143]

Why dont macrophages distinguishes foreign and self cell using the PAMPs

[@sabishek9667]

Perfect !!!!!

[@FrankLectures]

Thank you

[@karimaehab8180]

Thanks for your great effort ..a question that is confusing me is that why that type of immunity is called (hyper)sensitivity ?..although no agressive or over response is done.... it looks like a normal (not hyper) not abnormal response ! aganist a real pathogen ..as I know.. to be hyper sesitivity response is to be abnormal cute immune response towards non microbial pathogen like in type1 .....

[@FrankLectures]

Thank you for appreciating.
Regarding your question....
It is hypersensitivity, but delayed type. Damage is caused to the host as a result of this hypersensitivity.
Just go through this video once more from 7:10.
It looks like normal but, the immune response in the effector stage of this hypersensitivity is highly amplified that damages the host.

[@tinac8038]

IMPORTANT: poison ivy doesnt activate cd8 cells but cd4

[@mudassariqbal6874]

Aslam u alaikum sir
Sir i want to ask that
What the originally sense of prokaryote(before nucleus)
What's mean by before nucleus here???
Is its mean that * life/organism before nucleus*

[@FrankLectures]

"Before nucleus" refer to the fact that prokaryotes originated before nucleated cells.

[@shazrahshakeel9218]

Mudassar Iqbal
This means old nucleus which didn't have all of the constituents which are possessed by newer well developed nucleus.

[@mudassariqbal6874]

Aslam u alaikum sir
Please help me
I've a question that
Is tactic movement a autonomic movement or paratonic?
In my book this is mentioned that this is due to internal stimuli
But afterthis in further its types(i.e phototactic and chemotactic movement) they have written that these are due to stimuli of light and chemicals respectively
So please guide me that is it a autonomic or paratonic and how????

[@FrankLectures]

Walaikum assalam.
You are confusing these terms. Plant movements are of two types -autonomic and paratonic.
Autonomic movements occur spontaneously. And paratonic movements occur due to external stimuli. Tactic movement is one category of paratonic movements. You can read here for more information- knowledgeclass.blogspot.in/2014/10/movement-in-plants.html

[@mudassariqbal6874]

Frank Lectures
But sir in my Book it is mention
That
There are two types of movement in plants
1-Autonomic
2-Paratonic
Types of Autonomic movements:
1-Tactic
2-Turgor
3-Growth
Types of Paratonic movement
1-Tropic
2-Nastic

[@FrankLectures]

No, tactic movements are due to external stimuli. You should cross check this from some reference book in your school/college library.
Go to this link biology4isc.weebly.com/plant-movement.html
You will get to know some examples of these movements.

[@saskiakristofedes2482]

Is this the last video for immunology ?tnx

[@FrankLectures]

Yes. But remaining topics will be added soon. Thanks

[@gajjalasravani53]

Where is autoimmunity topic? 😒😏😤
y didn't u upload?

[@kipling1957]

Sorry, I just cant listen to that robotic voice.