Table 1.

Lumen diameter, by ultrasound, of carotid arteries from animals before and 5 wk following surgery

Treatment	Group n*	Uninjured Artery, mm†	Injured Artery, mm†
Day 0	15, 12	1.87±0.04	1.95±0.06
Day 35 Saline‡	3, 3	1.99±0.02	2.08±0.08
LPS‡	2, 2	1.97±0.05	2.09±0.12
Cultured HA crystals‡	2, 3	2.01±0.20	2.07±0.12
Bovine NPs	5, 5	2.21±0.05	2.17±0.10
Human NPs‡	4, 2§	2.22±0.06	2.27±0.09

^*Number of individual animals in which uninjured and injured arteries were imaged. Not all arteries could be imaged from all rabbits at both time points.

^†Values are means ± SE of lumen diameter.

^‡Ultrasound images were not obtained on all animals in this group.

^§Data from 2 arteries that remained patent; 3 injured arteries from animals in this group occluded within 1–3 wk of the injection. HA, hydroxyapatite; NP, nanoparticle.