Good afternoon! Thank you very much for visiting the website & blog. I am so excited about the opportunity this is going to give us for shedding some light on HLH & all Histio diseases! If you have tried to make a donation using the Paypal account on the website, I am sorry, but it is not working right now. I am working with them to get this resolved ASAP & it should be good to go by Monday morning. Hope you all have a fabulous weekend!