1. Abo T, Miller CA, Gartland GL, Balch CM (1983) Differentiation stages of human natural killer cells in lymphoid tissues from fetal to adult life. J Exp Med 157:273–284
2. Bouwens L, Remels L, Baekeland M, Bossuyt H Van, Wisse E (1987) Large granular lymphocytes or “pit cells” from rat liver: Isolation, ultrastructural characterization and natural killer activity. Eur J Immunol 17:37–42
3. Bouwens L, Wisse E (1987) Immuno-electron microscopic characterization of large granular lymphocytes (natural killer cells) from rat liver. Eur J Immunol 17:1423–1428
4. Enzan H, Iwamura S, Watanabe S, Saibara T, Onishi S, Yamamoto Y, Yamamoto H, Hara H (1989 a) Immunoelectron microscopic identification of pit cells in the rat and mouse livers. In: Wisse E, Knook DL, Decker K (eds) Cells of the hepatic sinusoid. Vol 2. The Kupffer Cell Foundation, Rijswijk, The Netherlands, pp 479–480
5. Enzan H, Iwamura S, Watanabe S, Saibara T, Onishi S, Yamamoto Y, Yamamoto H, Hara H (1989 b) Immunoelectron microscopical study on rat pit cells. In: Kim SH, Kojima M (eds) Proceedings of the First Korean-Japanese Workshop on Lymphoreticular Tissues and Diseases held on Cheju Island, pp 51–61