Efficacy and Safety Study of PGA (Poly-gamma Glutamic Acid) for Cervical Intraepithelial Neoplasia

Inclusion Criteria: * Fertile women between age of 20 and 49 * Patients with cervical intraepithelial neoplasia 1(CIN1) * HPV(Human Papilloma Virus) positive(+) * White Blood Cell Count(WBC) over 4thous/ul, Hemoglobin above over 9.0g/dL Platelet over 150thous/uL and ANC(Absolute Neutrophil Count) over 1,500 10\^6/L * AST(Aspartate Aminotransferase) no less than 4 times higher than normal ALT(Alanine Aminotransferase) no less than 4 times higher than normal * Normal for EKG(Electrocardiography) and no active disease detected trough chest X-ray * Be informed of the nature of the study and will give written informed consent Exclusion Criteria: * Malignant tumor in any organ other than cervical intraepithelial neoplasia * Active liver disease, immune disorder and severe renal failure * Leukemia, collagenosis, sclerosis, autoimmune disease, clinically significant allergic disease(mild allergic symptom not required medicine excluded) * Diagnosed diabetes * Taking any of followings affecting immunological reaction within 7 days (Glucocorticoid, vitamins, health food and oriental medicine etc) * Pregnancy and breastfeeding * Registered in other clinical trials * Patients whom the investigator considers inappropriate to participate in the study