Review: Eukaryotic DNA helicases: Essential enzymes for DNA transactions Pia ThömmesUlrich Hübscher Chromosoma Focus Pages: 467 - 473
Distribution of XhoI and EcoRI family repetitive DNA sequences into separate domains in the chicken W chromosome Yasushi SaitohShigeki Mizuno Original Articles Pages: 474 - 477
Widely dispersed DNA within plant and animal nucleoli visualised by 3-D fluorescence microscopy E. Gwyn JordanOlga V. ZatsepinaPeter J. Shaw Original Articles Pages: 478 - 482
Deficiency of X and Y chromosomal pairing at meiotic prophase in spermatocytes of sterile interspecific hybrids between laboratory mice (Mus domesticus) and Mus spretus Yoichi MatsudaPeter B. MoensVerne M. Chapman Original Articles Pages: 483 - 492
Involvement of chromatid cohesiveness at the centromere and chromosome arms in meiotic chromosome segregation: A cytological approach José A. SujaCarmen AntonioJulio S. Rufas Original Articles Pages: 493 - 501
The ultrastructure of the chromosome periphery in human cell lines Thierry GautierClaude MassonDanièle Hernandez-Verdun Original Articles Pages: 502 - 510
Male and female segregation distortion for heterochromatic supernumerary segments on the S8 chromosome of the grasshopper Chorthippus jacobsi M. D. López-LeónJ. CabreroJ. P. M. Camacho Original Articles Pages: 511 - 516
The Drosophila nuclear protein Bx42, which is found in many puffs on polytene chromosomes, is highly charged Claudia WielandSimone MannHarald Saumweber Original Articles Pages: 517 - 525
Demonstration of replication patterns in the last premeiotic S-phase of male Chinese hamsters after BrdU pulse labeling Anna Latos-BielenskaWalther Vogel Erratum Pages: 526 - 526