shell gland


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shell gland

[′shel ‚gland]
(invertebrate zoology)
An organ that secretes the embryonic shell in many mollusks.
(vertebrate zoology)
A specialized structure attached to the oviduct in certain animals that secretes the eggshell material.
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References in periodicals archive ?
New hypotheses on the function of the avian shell gland derived from microarray analysis comparing tissue from juvenile and sexually mature hens.
5 to 12 h post oviposition, but the eggshells collected from the shell glands showed more calcification extent than expected (Figure 1A and 1B).
2007) harvested uterus tissues at 2 h post oviposition, and screened out 34 known genes in the shell glands between hens with low and high egg productive rates.
In shell gland of oviduct of the 210-day's layer height epithelium 26,3[+ or -]1,4 [micro]m.
In shell gland average height epithelial cells 21,7[+ or -]1,0 [micro]m.
Analyzing the received results, we see, that the tunica mucosa among departments oviduct layer of 150-day's age is most strongly advanced in an isthmus, shell gland and magnum.
When GSI, follicle diameter in relation to percent composition of SVI, or shell gland weight in relation to percent composition of SVI were compared between male and female thorny skates, no apparent correlation was detected (Fig.
This conclusion was based on GSI, shell gland weight, diameter of the largest preovulatory follicles, and the presence of egg cases in specimens collected over the course of the study.
For females, this conclusion was based on ovary weight, shell gland weight, and diameter of the largest follicles (the preovulatory follicles).
Exogenous biliverdin, 500 nM each, was dissolved in 1X PBS and slowly and gently injected into the shell gland antrum of five laying Pekin ducks at 12-14 h post oviposition.
Data for the biliverdin content in the shell gland, uterus fluid and eggshell at various hours post oviposition from BSD and WSD were analyzed using one-way ANOVA.
The biliverdin concentration in the BSD shell gland remained constant at 6, 12 and 18 h, and reached the lowest quantity at 20 h and peaked at 23.