A radioautographic study of collagen synthesis by earthworm epidermis
1975; Elsevier BV; Volume: 7; Issue: 4 Linguagem: Inglês
10.1016/0040-8166(75)90032-4
ISSN1532-3072
AutoresJanice M. Burke, Russell Ross,
Tópico(s)Leech Biology and Applications
ResumoSecretion by the epidermis of two oligochaetes (Eisenia andEnchytraeus) was investigated radioautographically following administration of3H-proline,3H-tryptophan or Na235SO4. Regionally epidermal columnar cells ofEnchytraeus synthesize the overlying, probably collagenous, cuticle.Eisenia epidermis does not recordably synthesize the cuticle until after wounding (first eight segments removed). By two days postoperative the epidermal columnar cells ofEisenia synthesize the collagenous cuticle and, later in regeneration, the epidermis may simultaneously synthesize the different collagen of the underlying basement lamella. The epidermis ofEnchytraeus. but not ofEisenia, synthesizes some sulfated material associated with the cuticle surface.
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