Bee Propolis

Propolis is the material that bees use to seal small cracks and gaps in the hive. It acts as an antiseptic barrier protecting the hive from contamination and antimicrobial properties protect against viruses and bacteria. Propolis has been found to offer numerous health benefits
Dr. Seema Patel of the Bioinformatics and Medical Informatics Research Center, San Diego State University conducted a comprehensive review of the literature on propolis and cancer. Dr. Patel found laboratory and animal studies supporting propolis efficacy against cancers of the:
Brain
Pancreas
Head and neck
Kidney and bladder
Skin
Prostate
Breast
Colon
Liver
Blood
Propolis contains as many as 300 active compounds. These components were found to fight cancer in a variety of ways including:

Preventing the growth of new blood vessels to feed cancer cells (anti-angiogenesis)
Preventing the spread or metastasis of cancer from one organ to another
Halting cancer cell division
Inducing apoptosis or programmed cell death
In addition, propolis was found to mitigate the side effects or toxicity of chemotherapy drugs used in the treatment of cancer.