YOU SAID:
The thymocyte leaves the bone marrow
INTO JAPANESE
胸腺細胞は骨髄を離れます
BACK INTO ENGLISH
Thymocytes leave the bone marrow
INTO JAPANESE
胸腺細胞は骨髄を離れます
BACK INTO ENGLISH
Thymocytes leave the bone marrow
That didn't even make that much sense in English.