Imo,PRHN has it last chance to be a real stock.
last news are great,specially patents one just aproved and the other about to come.
this stock has experimented one of the greatest falls.
if it recover a 5000% up is posible.
for me worth a try.
do your dd.and g luck.
From beyond i want investing also,ill look for the way to contact with people who live on earth.
if you want put in touch with me before i depart.
dont afraid ill be a good an a legal boy.