Part of the problem with brain cancer is the blood brain barrier.  According 
to the people who treated my husband for brain cancer (and yes, all treatment 
failed) the blood brain barrier kept many things including medicine from the 
brain and I imagine it would keep colloidial silver from it.  Intravenous c/s 
could be tried of course.  I hate for my first post to this list to be a 
downer, but brain cancer is very hard to treat because surgically you have to 
be sure not to create a vegetable of your patient and radiation doesn't 
always help.  The blood brain barrier keeps most chemo from reaching the 
brain.  I'm very sorry about your sister in law or indeed anyone with brain 
cancer.  My husband died at 58.  He was very healthy and full of life except 
for the cancer and probably would have lived to 85 without it.  Margaret Park


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