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<h1>
<span>Histology Unit</span>
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<h2>About our work</h2>
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<p><strong>The Histology Unit is part of the </strong><a href="/research/research-labs-and-branches/biological-imaging-core-facility"><strong>Biological Imaging Core Facility</strong></a><strong>.</strong></p><p><strong>Facilities and equipment</strong></p><p>The National Eye Institute's Histology Unit provides expertise and up-to-date technical services for histological (under a light microscope or electron microscope) and cytological analyses for all of NEI and other NIH scientists.</p><p><strong>Services</strong></p><p>The Unit staff provides technical assistance in the development and optimization of histopathological and morphometric techniques, including the following:<br>Sample preparation and sectioning</p><ul><li>Fixation of cells, tissues and organs</li><li>Grossing tissues and organs, particularly the eyes (human and animal)</li><li>Embedding frozen tissues or organs in OCT (optimal cutting temperature)</li><li>Embedding samples in methacrylate or paraffin for light microscopy</li><li>Embedding samples in resin for electron microscopy</li><li>Sectioning frozen samples with a cryostat</li><li>Sectioning of embedded samples with a microtome or ultramicrotome</li></ul><p><strong>Slide processing</strong></p><ul><li>Routine histological stains such as H&amp;E or PAS II and stains such as Gram stains, AFB, silver, etc.</li><li>Immunostaining of human cells, tissues and organs with enzyme histochemistry (acid phosphatase, alkaline phosphatase, HRP, ABC avidin-biotin-complex)</li></ul>
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<h2>Histology Unit key staff</h2>
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<td headers="view-title-table-column" class="views-field views-field-title"><a href="/research/research-labs-and-branches/we-are-nei-intramural/mercedes-campos" hreflang="en">Mercedes Campos, M.D.</a> </td>
<td headers="view-field-lab-staff-title-table-column" class="views-field views-field-field-lab-staff-title">Unit Chief </td>
<td headers="view-field-email-table-column" class="views-field views-field-field-email"><a href="mailto:CamposM@nei.nih.gov">CamposM@nei.nih.gov</a> </td>
<td headers="view-field-phone-table-column" class="views-field views-field-field-phone">301-496-3043 </td>
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<td headers="view-title-table-column" class="views-field views-field-title"><a href="/research/research-labs-and-branches/we-are-nei-intramural/loxene-duncan" hreflang="en">Loxene Duncan</a> </td>
<td headers="view-field-lab-staff-title-table-column" class="views-field views-field-field-lab-staff-title">Histologist </td>
<td headers="view-field-email-table-column" class="views-field views-field-field-email"><a href="mailto:loxene.duncan@nih.gov">loxene.duncan@nih.gov</a> </td>
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<td headers="view-title-table-column" class="views-field views-field-title"><a href="/research/research-labs-and-branches/we-are-nei-intramural/iris-wise" hreflang="en">Iris Wise</a> </td>
<td headers="view-field-lab-staff-title-table-column" class="views-field views-field-field-lab-staff-title">Lead Histologist </td>
<td headers="view-field-email-table-column" class="views-field views-field-field-email"><a href="mailto:milleri@intra.nei.nih.gov">milleri@intra.nei.nih.gov</a> </td>
<td headers="view-field-phone-table-column" class="views-field views-field-field-phone">301-594-7063 </td>
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