Thanks for those responses. Explains some things I was not up to speed with. It sounds to me that investing in both companies can be worthwhile although I am tending to lean to Steven's idea about bios, namely; taking profits upon trial results and not waiting for the tough slog that the companies will have trying to generate sales. One other point that I omitted in my previous post:
Looking at a 5 year chart, AMLX's high is about $42, whereas RZLT's is a bit more than $17. Now of course that does not take into account dilution that has happened since those highs. I will think a bit more about lightening up ever so slightly on RZLT but also picking up some AMLX.