In early-1999, Kadar launched BrainPOP.com, a continuation of The Mysteries of Life. As part of the site's launch, Skeleton & Peak Flow were re-animated in Flash, and in 2006, the two shorts were majorly changed as part of a site rehaul.
The original shorts have been recently found in the Internet Archive's Wayback Machine, while the re-animated versions reside on a Wikispaces website.
Peak Flow (original): http://web.archive.org/web/19990209034910/http://www.kadmed.com/asthma_peak.html
Skeleton (original): http://web.archive.org/web/19990831044854/http://kadmed.com/asthma_skeleton.html
Peak Flow (re-animated): http://mrhardy.wikispaces.com/Peak+Flow.swf
Skeleton (re-animated): http://mrhardy.wikispaces.com/Skeletal+System.swf