Home / Standards / GB/T 40253-2021 GB/T 40253-2021 Active Code of diagnosis for mikrocytosis of oysters—Microscopic methods 牡蛎小胞虫病诊断规程 显微镜检查组织法 Standard Type GBT ICS 65.020.30 CCS B41 Status 现行 Issue Date 2021-05-21 Implementation 2021-12-01 Responsible Dept 农业农村部 Drafting Unit N/A