Most vessels lack the variety of armaments you carry- your phase cannons, photonic torpedoes, and the like.

Presence of immature blood vessels (sarcomatous vessels lacking endothelial cells) favors the bloodstream metastasizing.

Primary lymphatic vessels lack a muscular wall and do not have valves.

Because lymphatic vessels often lack a basement membrane, they can resorb molecules too large for venous uptake.

"This vessel lacks intellectual resources sufficient to that task."

The smallest vessels (lymphatic or lymph capillaries) lack both the muscular layer and the outer adventitia.

On another occasion, Porter told Welles that his own vessel lacked coal and that small steamers of shallow draft were required to make the blockade effective.

The Kondalian vessel lacked both power-bars and instruments.

These vessels had strong artillery and thick armor, but lacked seaworthiness, speed and long-distance abilities.

He had been becalmed, and as his vessel lacked a motor had been obliged to wait for wind.