Nucleoli are the sites of biosynthesis of the ribosomal precursors. They contain may copies
of the genes for the main rRNAs (18 S-and 28 S-rRNA) in the form of tandemly arranged …

A complex structure, visible by electron microscopy, surrounds each chromosome during
mitosis. The organization of this structure is distinct from that of the chromosomes and the …

We have isolated the murine homologue of the human Ki-67 antigen. The Ki-67 antigen is
used as a marker to assess the proliferative capacity of tumour cells; however, its cellular …

It has been claimed that the commercially available Ki-67 monoclonal antibody recognizes a
nuclear antigen which is solely expressed in cycling cells. Therefore, at present, Ki-67 is …

We identified a novel nucleoplasm localized protein in Arabidopsis called AT-hook motif
nuclear localized protein 1 (AHL1), which was isolated by visual screening of transformants …

Tau is a microtubule-associated protein that promotes assembly and stabilization of
cytoskeleton microtubules. It is mostly expressed in neuronal and glial cells but it is also …

In addition to genetic information, mitotic chromosomes transmit essential components for
nuclear assembly and function in a new cell cycle. A specialized chromosome domain …

The behaviour of nucleolar antigens known to associate with chromosomes at mitosis was
investigated in mammalian cells (HeLa, HEp-2, PtK1, CHO) by immunofluorescence and …

Although widely used as an operational marker of proliferation, the cell cycle-regulated Ki67
protein is of unknown function. pKi67 is found predominantly in the nucleolus in cycling …

In 1970, Busch and Smetana stated (page 24):''The basic mechanisms involved in the
resynthesis of the nucleolus are as interesting and unknown as the shut-oV mechanisms …