image<\/p>\n\n\n\n
Figure 2\u20137. Cells from different organisms with defined nuclei (After \nSchwann, 1839; From Katznelson, 1963). \n1 \u2014 gill cartilage from a frog; 2 \u2014 cartilage from a bone in the loins of \na pig embryo; 3 \u2014 enamel fibres from the teeth of a pig embryo; 4 \u2014 \ncells from the surface of the enamel coating; 5 \u2014 fibres from a human \ntooth isolated by maceration with HCl; 6 \u2014 fibrous cell from a cell \nwall; 7 \u2014 better developed cells from a cell membrane; 8 \u2014 cells from \nthe mucous substance of the membranes of a pig embryo; 9 \u2014 cell \nfrom the orbital cavity of a pig embryo; 10 \u2014 mast cells from the skull \ncavity of a fish; 11 \u2014 cells from the Achilles\u2019s tendon of a pig embryo; \n12 \u2014 cells from the middle layer of pig embryo aorta; 13 \u2014 muscle \ncells of a pig embryo.\n\n<\/pre>\n\n\n\nLater Concepts on the Structural Organizacion of the cell. Discovery of Some Its Organelles<\/h2>\n\n\n\n
Section 2.3.<\/strong> The cell theory has confirmed the principle of uniformity in the
structure of plant and animal organisms. The cell was accepted as a basic
structural unit. The problem of the formation of new cells from the already
existing ones i.e. their genesis has come into the limelight.
An answer to this very important question was attempted to be given
by M. Schleiden and Th. Schwann. Schleiden has created the theory of
cytogenesis which is expressed in short by the following: from the mucous
substances attached to the inner layer of the cell wall of the existing cells,<\/p>\n","protected":false},"excerpt":{"rendered":"image Figure 2\u20137. Cells from different organisms with defined nuclei (After Schwann, 1839; From Katznelson, 1963). 1 \u2014 gill cartilage from a frog; 2 \u2014 cartilage from a bone in the loins of a pig embryo; 3 \u2014 enamel fibres from the teeth of a pig embryo; 4 \u2014 cells from the surface of the […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-485","post","type-post","status-publish","format-standard","hentry","category-book"],"_links":{"self":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=485"}],"version-history":[{"count":1,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/485\/revisions"}],"predecessor-version":[{"id":489,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=\/wp\/v2\/posts\/485\/revisions\/489"}],"wp:attachment":[{"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cellandcelldivision.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}