More comments about lungs and breathing:
https://freerepublic.com/focus/f-bloggers/3735908/posts?page=316#316
https://freerepublic.com/focus/f-bloggers/3735908/posts?page=322#322
https://freerepublic.com/focus/f-bloggers/3735908/posts?page=337#337
Thank you for all the good information .
Thanks!
marking links.
thanx LJ