About ICBLS2019 2019 4th International Conference on Biology and Life Sciences (ICBLS2019) (http://www.icbls.net/2019/en/home) is a platform for academic communications between specialists and scholars in the fields of biology and life sciences. ICBLS2019 will be held in Xi'an, China during May 29-31, 2019. Xi'an is the capital of Shaanxi Province, located in the northwest of China. Publication 2019 4th International Conference on Biology and Life Sciences (ICBLS2019) accepts original and unpublished papers. Both Full paper and Abstract are welcomed. Full papers accepted by the conference will be published online in the following journals of Science Publishing Group (http://www.sciencepublishinggroup.com). The journals have been indexed and abstracted by WorldCat, CrossRef, Electronic Journals Library, CNKI, Zeitschriftendatenbank, EZB, ResearchBib, Polish Scholarly Bibliography, Wissenschaftszentrum Berlin, etc. American Journal of Life Sciences (AJLS) http://www.sciencepublishinggroup.com/j/ajls ISSN Print: 2328-5702 ISSN Online: 2328-5737 Journal of Plant Sciences (JPS) http://www.sciencepublishinggroup.com/j/jps ISSN Print: 2331-0723 ISSN Online: 2331-0731 American Journal of Bioscience and Bioengineering (BIO) http://www.sciencepublishinggroup.com/j/bio ISSN Print: 2328-5885 ISSN Online: 2328-5893 Science Discovery (SD) http://www.sciencepublishinggroup.com/j/sd ISSN Print: 2331-0642 ISSN Online: 2331-0650