A 16-yrs-old girl presents with bowel obstruction. Laparotomy reveals markedly enlarged para-aoic lymph nodes. Biopsy of lymph nodes exhibit a diffuse neoplastic infiltrate of small, round lymphocytes with a "starry sky" appearance on low power. The cytoplasm of some of the lymphocytes is vacuolated and fat stains are positive. You would expect the neoplastic cells to demonstrate a