Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Compensated polarised light microscopy demonstrating coexistent monosodium urate (MSU) and (calcium pyrophosphate dihydrate) CPPD crystals. The MSU crystals (#) are needle shaped and negative birefringent whereas the CPPD crystals (♮) are rhomboid and weakly positively birefringent.
