Smiley This video by Dr. Been is very interesting in respects to M2M vs S/C. What some people said on this and other boards is that Lero would work better in S/C than M2M, but this video is say it will keep people from progressing. Which is what the safety data implied, fewer patients with SAEs means fewer progressed.He says as the macrophages enter the lungs they express CCR1 and CCR5, which happens at the transition from moderate to severe. So Lero should work well in both phases, but may be better to keep people from progressing to severe.