The segment with NaCl:
Dissolve in 600ml 0.02M cysteine solution, the solution has a pH 7- 7.5 obtained then slowly add 60g of solid NaCl. After 1 hour, centrifuged at 2500 rev / min for 1 hour to collect precipitate, leaving the liquid dich
đang được dịch, vui lòng đợi..