Allergens || Allergy || Types of Allergens || Role of b cells and t cells in allergy || causes

Welcome to this detailed lecture on inhalent Welcome to our complete and easy-to-understand video on allergens, their types, causes, and symptoms — specially designed for medical and biology students. Whether you're a beginner or revising for exams like fsc, mdcat, or neet, this video gives you a clear explanation with handwritten notes and real-life examples.

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what are allergens?
Allergens are harmless substances that cause an allergic reaction in some people. Your immune system mistakenly treats them as dangerous and overreacts, leading to allergy symptoms.

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in this video, you will learn:
✔ what are allergens in simple urdu/hindi
✔ types of allergens:
- ingestant allergens (e.g. milk, coffee)
- injectant allergens (e.g. penicillin)
- contact allergens (e.g. poison ivy, cosmetics)
- aeroallergens (e.g. pollen, dust)
- infectant allergens (e.g. bacteria, molds)
- infestant allergens (e.g. worms, parasites)
✔ common symptoms like itching, rashes, asthma, vomiting, bloating, and more
✔ causes of allergy
✔ difference between infectant and infestant allergens
✔ how b cells and t cells are involved in allergy response
✔ real-life examples and handwritten notes for better understanding

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who should watch this video?
• fsc biology students
• mdcat/neet aspirants
• medical/nursing students
• anyone wanting a basic understanding of allergies
• teachers looking for clear visual explanations

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handwritten notes included
We have explained everything using high-quality handwritten notes so you can visually understand and revise concepts easily. You can also pause the video to take screenshots or request pdf notes in the comments.

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important keywords to boost your knowledge:
allergy, allergens, types of allergy, handwritten notes biology, urdu biology lectures, milk allergy, penicillin allergy, pollen allergy, infectant allergens, infestant allergy, immune system, b cells, t cells, mdcat 2025, fsc biology chapter 14, neet immunity
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don't forget to:
👍 like this video
💬 comment for pdf notes or doubts
🔔 subscribe for more easy urdu/hindi medical lectures

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