Family Medical Leave Act: ready or not!
Many employers already have policies in place that grant job leaves for a variety of reasons. It is no longer optional for employers to grant job leaves; appropriate leave is now the law.
Employment↗
Biomedical subjects
J Westerfield
Publications and source records attributed to J Westerfield.
Nerve cells in hydra: monoclonal antibodies identify two lineages with distinct mechanisms for their incorporation into head tissue.
The relationship between populations of nerve cells defined by two monoclonal antibodies was investigated in Hydra oligactis. A population of sensory nerve cells localized in the head (hypostome and tentacles) is identified by the binding of antibody JD1. A second antibody, RC9, binds ganglion cells throughout the animal. When the nerve cell precursors, the interstitial cells, are depleted by treatment with hydroxyurea or nitrogen mustard, the JD1+ nerve cells are lost as epithelial tissue is sloughed at the extremities. In contrast, RC9+ nerve cells remain present in all regions of the animal following treatment with either drug. When such hydra are decapitated to initiate head regeneration, the new head tissue formed is again free of JD1+ sensory cells but does contain RC9+ ganglion cells. Our studies indicate that (1) nerve cells are passively displaced with the epithelial tissue in hydra, (2) JD1+ sensory cells do not arise by the conversion of body column nerve cells that are displaced into the head, whereas RC9+ head nerve cells can originate in the body column, (3) formation of new JD1+ sensory cells requires interstitial cell differentiation. We conclude from these results that the two populations defined by these antibodies are incorporated into the h ad via different developmental pathways and, therefore, constitute distinct nerve cell lineages.
Animals↗
Transdifferentiation occurs continuously in adult hydra.
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Animals↗
From chaos to excellence: preparing for a successful Joint Commission survey.
The new joint Commission on Accreditation of Healthcare Organizations survey requirements make the preparation process more challenging than ever before. In today's competitive healthcare environment, a successful survey is imperative. The authors discuss multiple and innovative ways to prepare for a survey under the 1996 guidelines. Specific examples of processes and forms are included.
Accreditation↗