Lecture-103: Principles of topical therapy, Part-I. Rook's chapter 18.

Whole-channel inclusion: Dermatology online by Prof Asher (title sample: Nearly every upload is a structured dermatology lecture or clinical demonstration tied directly to a standard textbook, fitting Lumen's bar for genuine teaching content.; 3 of 3 sampled transcripts read as real teaching); this title passed a strict title check.