A collaborator describes this device to me: "I dont know if you have ever heard of an item that helps to extend blood smears to assure at least one of acceptable quality even if the person preparing them is not familiar enough with the procedure. Some folks here who have been involved in clinical trials were talking about it (although they did not remember the name). It would be nice if you can find out how its called and what's its cost." Does anyone know what she might be referring to? Thank you.