Complex sentence: SSA/Ro is associated with numerous other autoimmune conditions but are often present in Sjögren's.However SSA and SSB tests are frequently not positive in Sjogren's Syndrome.
Split into simpler sentences: SSA/Ro is associated with numerous other autoimmune conditions, but are often present in Sjögren's. However, SSA and SSB tests are frequently not positive in Sjogren's syndrome.