be essential for

Platelet 12-LOX is essential for FcγRIIa-mediated platelet activation
Will Boron be Essential for Human Nutrition?
Immunotherapy, based on activated macrophages: A correct timing is expected to be essential for the success of the therapy
A coffee powder brewing device for coffee machine
Visual field assessment: Should it be essential for new car drivers?
Mechanical ventilation may not be essential for initial cardiopulmonary resuscitation.
Sequence and inactivation of the pss gene of Escherichia coli. Phosphatidylethanolamine may not be essential for cell viability.
Mechanical ventilation may not be essential for initial cardiopulmonary resuscitation : Chest 1995; 108/3 (821–827)
Cutting edge: CD4+ T cell help can be essential for primary CD8+ T cell responses in vivo.
The human lipodystrophy gene BSCL2/seipin may be essential for normal adipocyte differentiation