Water and electrolyte balance

Round-15 hunt: picked; source: deeper uploads from a strong round 10-14 channel; channel already live on Lumen; strict per-title check + final strict pass; title rules; oEmbed verified.

A 48-minute video from Mikhail Khoretonenko: “Water and electrolyte balance”.

Video by Mikhail Khoretonenko, played through YouTube's embedded player.