Z-series image of mouse ES cells carrying a beta-globin BAC transgene array (clone 8d) and transduced with a lentivirus containing an EGFP-lacI expression cassette. EGFP-LacI binding (green) to the 25...

Nuclear envelope and spindle dynamics when the nucleus moves into the neck of kar9delta Nip100deltaCAP-Gly double mutant cells arrested in S phase. In these cells, the spindle failed to enter the bud ...

The macronucleus is the largest organelle in the P. multimicronucleatum cell and can measure 35µm long by 12µm wide. A small fraction of a macronucleus is seen in this micrograph. The chromatin appe...

Z-series image of mouse ES cells carrying an alpha-globin BAC transgene array (clone 7d) transduced with a lentivirus containing an expression cassette for EGFP-LacI. EGFP-LacI binding (green) to the...

A grazing section through the edge of the nuclear envelope. This illustrates nuclear envelope pores in face view. Polysomes, chains of ribosomes, are bound to the outer membrane of the nuclear envelop...

In one experiment in which electric shock was applied to Paramecium cells to trigger trichocyst discharge the macronucleus in one cell was observed to undergo morphological changes of two types. First...

The micronucleus of Paramecium caudatum is distinctive from other closely related Paramecium such as P. multimicronucleatum and P. tetraurela. P. caudatum has only one micronucleus of a type in which ...

The micronucleus of Paramecium caudatum is distinctive from other closely related Paramecium such as P. multimicronucleatum and P. tetraurela. P. caudatum has only one micronucleus of a type in which ...

Early transmission electron micrographs showing pore details in negatively stained preparations of nuclear envelopes. Upper panel shows the pronounced 8-fold symmetry in the closely spaced pores of t...

Nuclear envelope and spindle dynamics when the nucleus moves into the neck of kar9delta mutant cells arrested in S phase. Movie plays at 100x real time and is movie S5 in Proc Natl Acad Sci. 2009. 106...