Search results for " Home"

Degenerative and regenerative processes involved in midgut pseudotumor formation in the stick insect (Carausius morosus)

2009

Spontaneous and experimentally induced pseudotumor formation in Carausius morosus impairs the midgut tissue homeostasis. Spontaneous pseudotumor formation begins by the break down of a single or a small group of columnar cells (CCs) and is followed by the degeneration of neighboring CCs. There are not only marked similarities but also decisive differences between normal dying CCs in healthy specimens and the degeneration of CCs leading to pseudotumors: in both cases, the apical cell parts with the nucleus are extruded into the midgut lumen, but only during of pseudotumor formation an "amorphous substance" originates from the basal parts of the CCs. Hemocytes are attracted to this substance …

Midgut pseudotumors and the maintenance of tissue homeostasis: studies on aging and manipulated stick insects.

2009

Stick insects (Carausius morosus) develop pseudotumors in aging adults. Pseudotumor formation starts at the M2 midgut region where an accumulation of stomatogastric nerve terminals is observed. Pseudotumors arise from dying columnar cells whose basal parts form an “amorphous substance” at the basement membrane whereas the apical parts, including the nucleus, are expelled into the gut lumen. The “amorphous substance” is ensheathed by hemocytes. These nodules, which do not melanize, characterize the phenotype of the pseudotumors. With age, cell death and pseudotumor infestation increases. It is shown that the maintenance of midgut tissue homoeostasis is disturbed and becomes more serious with…

Aplausos deuidos al dis seis de nouiembre, natal de Carlos II nuestro Señor y Rey de las Españas.

Fris, caplletra ornada, filets Text a 1 col. - Reclams Sign.: [ ]1, A-C4

Sacrificios de el amor, y finezas de la lealtad en la gloriosa, plausible, y deseada aclamacion de ... Don Carlos III de las Hespañas, executada por…

1759

Caplletra grav., banda, vinyetes Sign.: A-D4, E2 Reclams

Sacrificios de el amor, y finezas de la lealtad en la gloriosa, plausible, y deseada aclamacion de ... Don Carlos III de las Hespañas, executada por …

Caplletra grav., banda, vinyetes Sign.: A-D4, E2 Reclams

Relacion de el festivo, y obsequioso recibimiento que hizo la Ciudad de Valencia al ... Infante Don Carlos quando transitò por ella para proseguir su…

Sig. A-B4, C3 Capital grav Sig. A-B4, C3. - Sense port. - Reclams

Relacion de el festivo, y obsequioso recibimiento que hizo la Ciudad de Valencia al ... Infante Don Carlos quando transitò por ella para proseguir su…

Sig. A-B4, C3 Capital grav Sig. A-B4, C3. - Sense port. - Reclams

Relacion de las festivas aclamaciones, con que celebró ... Valencia la noticia de los ... Desposorios de ... Don Carlos Sebastian de Borbon y Farnese…

Sign. A-E4 Precedeix al tít.: Creu grega Capital grav Sign. A-E4. - Sense port. - Reclams

Noticia de las fiestas celebradas por la M.I.N. y L. Villa de Exea de los Caballeros en la proclamacion del señor Rey Don Cárlos IV.

Filets Text a 1 col. - Reclams Sign.: [ ]2

Relacion sucinta de las fiestas celebradas en la ciudad de Nuestra Señora de la Paz, en el Perú, á costa del regidor de ella Don Tadeo Diez de Medina…

Text a 1 col. - Reclams Sign.: [ ]2