Reishi
Ganoderma lucidum causes apoptosis in leukemia, lymphoma and multiple myeloma cells
http://www.ncbi.nlm.nih.gov/pubmed/16423392
Ganoderma lucidum extracts inhibited leukemia WEHI-3 cells in BALB/c mice and promoted an immune response in vivo.
http://www.ncbi.nlm.nih.gov/pubmed/19966494
Ganoderma lucidum Polysaccharides Induce Macrophage-Like Differentiation in Human Leukemia THP-1 Cells via Caspase and p53 Activation
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3135330/
Someones personal story - read the comments section about people taking reishi for leukemia...
http://margaret.healthblogs.org/2009/09/09/reishi-and-multiple-myeloma-full-study/
There was a clinical trial for reishi and kids - i don't know the results.. but it was phase 3 clinical trial.
http://www.clinicaltrials.gov/ct2/show/NCT00575926
Nuclear factor-kB is constitutively activated in primitive human acute myelogenous leukemia cells
http://bloodjournal.hematologylibrary.org/content/bloodjournal/98/8/2301.full.pdf?sso-checked=1
Nuclear factor-kappaB signaling: a contributor in leukemogenesis and a target for pharmacological intervention in human acute myelogenous leukemia.
http://www.ncbi.nlm.nih.gov/pubmed/20136626
Beta-catenin when suppressed stops leukemia...
http://www.sciencedaily.com/releases/2010/12/101213121704.
And reishi is know to suppress this protein...
Here is one article talking about how reishi suppresses beta-catenin http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3201987/
Great article about reishi and leukemia
http://diamantes500.com/wp-content/uploads/2013/08/17-ganoderma-apoptosis.pdf
AHCC and leukemia