By Kay Lazar
| GLOBE STAFF
MARCH 01, 2013
Particles found floating in vials of a fertility drug that was recalled last week by a Waltham speciality pharmacy have been identified as apparently harmless pieces of the vial’s rubber stopper.
Laboratory results given to the Globe late Thursday by Village Fertility Pharmacy, which commissioned the report, concluded: “The vials contained numerous particles that contain polyisobutene with substantial amounts of talc and silica. This composition is typical of rubber stopper formulations.
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