Esikweni lamaseli, i-serum iyisakhi esibalulekile esithuthukisa izici zokunamathela, izici zokukhula, amaprotheni abophayo, njll., ukukhula kwamangqamuzana.Uma usebenzisa i-serum, sizohileleka ekusebenzeni kokulayisha kwe-serum, ngakho-ke kufanele ifakwe kanjani kumabhodlela e-serum e-PETG?1, defrost Khipha i-serum kusuka ...
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