English to Russian Science Biology (-tech,-chem,micro-)

In an example, the instructions indicate that the human should be genotyped for an OX40L variant sequence of the invention before administering the antibody or fragment to the human. In an example, the instructions indicate that the human should be phenotyped for an OX40L variant of the invention before administering the antibody or fragment to the human. In an example, the human is of Chinese (e.g., Han or CHS) ethnicity and the instructions are in Chinese (e.g., Mandarin).

человек по этнической принадлежностия является китайцем...(китаец хань или .........китаец Южной Хани)
вообще непонятно как перевести CHS

Спасибо!