PRAGUE, April 28 (Xinhua) -- Czech scientists have developed a new medicine against lymph node cancer which has had very good effects in tests so far, the daily Mlada fronta Dnes reported on Saturday.

    According to the paper, malignant tumors on tested dogs' throats and stomachs disappeared after six days of treatment by use of the medicine.

    The new medicine is unique as it affects only cancer-hit cells without destroying healthy tissue, the paper said.

    Its application is thus not as drastic as, for example, chemotherapy, which destroys the whole immunity system, it added.

    The U.S. company Gilead has started to test the substance, developed in Prague's Institute for Organic Chemistry and Biochemistry and designed to treat lymph node cancer on several thousands of patients in the U.S., the paper said.

    The researchers are now trying to detect possible side effects of the medicine that could be put on sale in about six years.

    The new medicine is effective in the case of lymph node cancer that makes up one-fourth of all cancerous diseases. It affects tumors in abdomen, chest, thymus and spleen, the paper wrote.