| http://www.w3.org/ns/prov#value | - Base 163 is biased in position by spring 173 against shelf 177 and by friction from barrel 171 prior to initiation of needle retraction. [0104] Needle ejection through web 179 of boot 181 occurs as discussed with reference to syringe 1 above, which is incorporated herein, with base 163 being forced downwardly around the needle assembly except no supports are utilized.
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