 Currently, there is no treatment to alleviate the symptoms of mucositis caused by chemotherapy.When rats were inflicted with mucositis by chemotherapy drugs, the intestinal tissues in those pretreated with streptococcus thermophilus TH-4 functioned more healthily and were less distressed.Strains of "S. thermophilus" have also reduced risks of AAD (antibiotic-associated diarrhea), an issue that results from taking antibiotics.