Distinct lobes of Limulus ventral photoreceptors. I. Functional and anatomical properties of lobes revealed by removal of glial cells
Removing the glial cells that encase Limulus ventral photoreceptors allows direct observation of the cell surface. Light microscopy of denuded photoreceptors reveals a subdivision of the cell body into lobes. Often one lobe, but sometimes several, is relatively clear and translucent (the R lobes). T...
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| Veröffentlicht in: | The Journal of general physiology 1982-12, Vol.80 (6), p.825-837 |
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| container_title | The Journal of general physiology |
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| creator | Stern, J Chinn, K Bacigalupo, J Lisman, J |
| description | Removing the glial cells that encase Limulus ventral photoreceptors allows direct observation of the cell surface. Light microscopy of denuded photoreceptors reveals a subdivision of the cell body into lobes. Often one lobe, but sometimes several, is relatively clear and translucent (the R lobes). The lobe adjacent to the axon (the A lobe) has a textured appearance. Scanning electron microscopy shows that microvilli cover the surface of R lobes and are absent from the surface of A lobes. When a dim spot of light is incident on the R lobe, the probability of evoking a single photon response is two to three orders of magnitude higher than when the same spot is incident on the A lobe. We conclude that the sensitivity of the cell to light is principally a function of the R lobe. |
| doi_str_mv | 10.1085/jgp.80.6.825 |
| format | Article |
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When a dim spot of light is incident on the R lobe, the probability of evoking a single photon response is two to three orders of magnitude higher than when the same spot is incident on the A lobe. 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We conclude that the sensitivity of the cell to light is principally a function of the R lobe.</description><subject>Adaptation, Ocular</subject><subject>Animals</subject><subject>Horseshoe Crabs - anatomy & histology</subject><subject>Methods</subject><subject>Photic Stimulation</subject><subject>Photoreceptor Cells - physiology</subject><subject>Photoreceptor Cells - ultrastructure</subject><issn>0022-1295</issn><issn>1540-7748</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1982</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVkU9r3DAQxUVJSTdpb7kGfMopdqSRZUuXQknzDxZ6yV3I8nijYFuuZC_kA_R7V4uXkAjEjHg_PWl4hFwwWjAqxc3rbiokLapCgvhCNkyUNK_rUp6QDaUAOQMlvpGzGF9pWgLoKTmtWS1KRTfk328XZzfaOet9gzHzXbZ1w9IvMdvjOAfTZ9OLn31Ai1Mqscieiux-STecH5NqxjZtM_vB2QMc_IRhdqvV6hlwj6bHNmveUj_4feKSuOtdaiz2ffxOvnamj_jjWM_J8_3d8-1jvv3z8HT7a5tbUKXIra0VoFCKyoYrZKVVwGU6cck7hQ0H6Mq2ltQaQGigahlQ0RqjuKxZxc_Jz9V2WpoBW7sOqKfgBhPetDdOf1ZG96J3fq8BQFYCksHV0SD4vwvGWQ8uHiYwI_olakmBM1oewOsVtMHHGLB7f4RRfUhNp9QSriudUkv45cePvcPHmPh_lB6V9g</recordid><startdate>198212</startdate><enddate>198212</enddate><creator>Stern, J</creator><creator>Chinn, K</creator><creator>Bacigalupo, J</creator><creator>Lisman, J</creator><general>The Rockefeller University Press</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>198212</creationdate><title>Distinct lobes of Limulus ventral photoreceptors. 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Functional and anatomical properties of lobes revealed by removal of glial cells</title><author>Stern, J ; Chinn, K ; Bacigalupo, J ; Lisman, J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2945-cc792e59908b39e14c9238908383f9eb322f4d780ca2e2b26d1205daa9387163</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1982</creationdate><topic>Adaptation, Ocular</topic><topic>Animals</topic><topic>Horseshoe Crabs - anatomy & histology</topic><topic>Methods</topic><topic>Photic Stimulation</topic><topic>Photoreceptor Cells - physiology</topic><topic>Photoreceptor Cells - ultrastructure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stern, J</creatorcontrib><creatorcontrib>Chinn, K</creatorcontrib><creatorcontrib>Bacigalupo, J</creatorcontrib><creatorcontrib>Lisman, J</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>The Journal of general physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stern, J</au><au>Chinn, K</au><au>Bacigalupo, J</au><au>Lisman, J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Distinct lobes of Limulus ventral photoreceptors. I. Functional and anatomical properties of lobes revealed by removal of glial cells</atitle><jtitle>The Journal of general physiology</jtitle><addtitle>J Gen Physiol</addtitle><date>1982-12</date><risdate>1982</risdate><volume>80</volume><issue>6</issue><spage>825</spage><epage>837</epage><pages>825-837</pages><issn>0022-1295</issn><eissn>1540-7748</eissn><abstract>Removing the glial cells that encase Limulus ventral photoreceptors allows direct observation of the cell surface. Light microscopy of denuded photoreceptors reveals a subdivision of the cell body into lobes. Often one lobe, but sometimes several, is relatively clear and translucent (the R lobes). The lobe adjacent to the axon (the A lobe) has a textured appearance. Scanning electron microscopy shows that microvilli cover the surface of R lobes and are absent from the surface of A lobes. When a dim spot of light is incident on the R lobe, the probability of evoking a single photon response is two to three orders of magnitude higher than when the same spot is incident on the A lobe. We conclude that the sensitivity of the cell to light is principally a function of the R lobe.</abstract><cop>United States</cop><pub>The Rockefeller University Press</pub><pmid>7175490</pmid><doi>10.1085/jgp.80.6.825</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The Journal of general physiology, 1982-12, Vol.80 (6), p.825-837 |
| issn | 0022-1295 1540-7748 |
| language | eng |
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| source | MEDLINE; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Adaptation, Ocular Animals Horseshoe Crabs - anatomy & histology Methods Photic Stimulation Photoreceptor Cells - physiology Photoreceptor Cells - ultrastructure |
| title | Distinct lobes of Limulus ventral photoreceptors. I. Functional and anatomical properties of lobes revealed by removal of glial cells |
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