Fig. 4

Reverse transcription-polymerase chain reaction results in different tissues of each group of mice. A Reverse transcription-polymerase chain reaction results in lungs of each group of mice. B Reverse transcription-polymerase chain reaction results in brains of each group of mice. C Reverse transcription-polymerase chain reaction results in hearts of each group of mice. D Reverse transcription-polymerase chain reaction results in kidneys of each group of mice. E Reverse transcription-polymerase chain reaction results in livers of each group of mice. F Reverse transcription-polymerase chain reaction results in spleens of each group of mice. dpi: days post infection; The H7 and N9 gene levels are shown as the cycle threshold (Ct) value; A Ct value > 38 was considered negative