Inclusion Criteria:

- Adults (≥ or equal to 18 years old).

- Patients scheduled for resection of 3 or more liver segments for any indication, with
or without other planned procedures.

Or

- Normal healthy volunteers (control).

Exclusion Criteria:

- Chemotherapy or GCSF treatment in the preceding 4 weeks.

- CHILD'S classification B or above.

- Presence of active infection.

- History of lymphoma or leukemia.

- Normal healthy volunteers who underwent chemotherapy treatment at any stage of their
life will be excluded.

- Normal healthy volunteers who are under any active treatment for any active illness
will be excluded.