- protoscolex stage
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[:life-stage/id "WBls:0000715"] :life-stage/definition An infective larval stage of cestodes which develops from the hydatid cyst. The stage begins when a clustering of cells emerge from the germinal layer of hydatid cysts. The buds elongate and the cells at their bases seem to diminish in number. Very early on a furrow appears in the elongated buds, delimiting anterior (scolex) and caudal (body) regions. Hooks are the first fully-differentiated structures formed at the apical region of the nascent scolex. A cone can later be seen at the center of the hooks, the body is expanded and a structured neck is evident between the scolex and the body. During protoscolex development this parasitic form remains attached to the germinative layer through a stalk. When fully differentiated, the stalk is cut off and the infective protoscolex is now free in the hydatid fluid. This stage ends when the protoscolex attaches, via the scolex, to the host intestinal tissue and begins to develop into a adult.
- 190-cells embryo Ce
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[:life-stage/id "WBls:0000089"] :life-stage/definition P4 and M cells have finished migrating. Contains 190 cells.
- late cleavage stage embryo Ce
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[:life-stage/id "WBls:0000014"] :life-stage/definition The C. elegans life stage spanning 210-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage before the fast cleavage of cells finishes.
- elongating embryo Ce
importer/temp
[:life-stage/id "WBls:0000015"] :life-stage/definition The C. elegans life stage spanning 350-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The stage that embryo starts elongation until elongation is over.
- 1.5-fold embryo Ce
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[:life-stage/id "WBls:0000018"] :life-stage/definition The C. elegans life stage spanning 420-460min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and fold back 50\%. A stage between comma embryo and 2-fold embryo.
- 2-fold embryo Ce
importer/temp
[:life-stage/id "WBls:0000019"] :life-stage/definition The C. elegans life stage spanning 460-520min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and double fold. A stage between 1.5-fold embryo and 3-fold embryo.
- comma embryo Ce
importer/temp
[:life-stage/id "WBls:0000017"] :life-stage/definition The C. elegans life stage spanning 390-420min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo looks like a comma. A stage between bean embryo and 1.5-fold embryo.
- gastrulating embryo Ce
importer/temp
[:life-stage/id "WBls:0000010"] :life-stage/definition The C. elegans life stage spanning 100-290min after first cleavage at 20 Centigrade. Proliferate from 28 cells to 421 cells. Referring to the whole period of gastrulation.
- enclosing embryo Ce
importer/temp
[:life-stage/id "WBls:0000013"] :life-stage/definition The C. elegans life stage spanning 290-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage when embryo just finished gastrulation and is enclosing.
- fully-elongated embryo Ce
importer/temp
[:life-stage/id "WBls:0000021"] :life-stage/definition The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.