Method: Use the method of indirect immunofluorescence, mice cross protection test and SDS -page to determine the serum type, the toxicity and the protein atlas of the isolated strains.
Objective to investigate serum iron level and relevant factors among preschool children in Shenzhen city, and to provide scientific basis of making policy for children health protection.
目的调查深圳市学龄前儿童血清铁营养素状况及其影响因素，为制定保护儿童健康措施提供科学依据。
3
Objective To investigate serum zinc level and relevant factors among preschool children in Shenzhen city, and to provide scientific basis of making policy for children health protection.