Primary signet-ring cell carcinoma of urinary bladder.

The influence of light on cone disk shedding in the lizard, Sceloporus occidentalis.

Acute cervical pain associated with soft-tissue calcium deposition anterior to the interspace of the first and second cervical vertebrae.

Mallet finger--a simple effective treatment.

The painful hip prosthesis.

Pseudarthrosis at the shoulder joint.

Immediate osteotomy for vertical fractures of the femoral neck.