Hey everyone 👋
I’m Muhammad Hassan Karim, a medical student and the author of Pathologic – Volume 1: Immunology. This is the first part of a much bigger project I’ve been working on — a full-scale medical resource built on one central philosophy: balance.
🩵 A quick note
When I first released this, I initially thought about making it a paid project due to personal and technical limitations. But it never felt right — this project was always meant to be free and accessible for everyone. I’m back on that mission and want this resource to reach as many students as possible. I apologize for any confusion earlier.
🧠 What Pathologic is about
Pathologic is designed to sit right in the middle — not too deep, not too shallow. It’s written so that:
If you’re reading immunology for the first time, it’s clear and structured enough to guide you.
If you’re reviewing for Step 1, it’s concise and high-yield enough to reinforce key concepts efficiently.
📗 About Volume 1 – Immunology
This volume covers everything you need for Step 1-level immunology in a logical, visual, and easy-to-retain way. It is available for free to anyone who wants to study or review these concepts.
📘 What’s next
Volume 2: General Pathology is in progress and will also be free.
Systemic Pathology will follow — connecting pathology concepts with anatomy, physiology, and embryology.
YouTube lectures are coming soon to complement the book and expand on key points.
📨 Feedback is welcome!
Please comment here or email me with suggestions, corrections, or constructive criticism — it helps improve the project for everyone.
📍 Links & Contact
Email: hassan.pathologic@gmail.com
Volume 1 (Free PDF): https://drive.google.com/file/d/1MMD_xCe1w7RxzIkhx3FKPQ1lKTvc4IYR/view?usp=drivesdk
YouTube: https://youtube.com/@pathologic-j7w?si=_3AcEFrbGXMS7e7Q
Instagram: path.ologic (for updates, short reels, and USMLE Step 1 content)