Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 6

How does the process of lyophilization work in order to pre serve microorganisms?
(a) Rapidly frozen organisms in vials are subjected to a vacuum instrument that removes water from them and seals the vials under vacuum.
(b) The process allows large ice crystals to form inside the cell ensuring their preservation.
(c) The rapid freeze-thaw cycles allow for rapid cryopreser vation.
(d) The process works by removing both water and con taminating organisms under vacuum.
(e) All of the above.