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001 ocm25703083;

003 OCoLC;

005 20241021155019.0;

008 920424s1967 xx bm 000 0 eng d;

035 a| (Sirsi) o25703083;

035 a| (OCoLC)25703083;

049 a| EREE;

050 4 a| QP572.E85b| G37x 1967;

100 1 a| Garrett, Michael Reed,d| 1943-e| author.?| UNAUTHORIZED;

245 14 a| The induction of consecutive pseudopregnancies by estrogen-progesterone injections in the mature albino rat, Rattus norvegicus (Berkenhout) /c| by Michael Reed Garrett.;

264 0 c| 1967.;

300 a| 40 leaves ;c| 28 cm;

336 a| textb| txt2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

502 b| M.A.c| East Carolina Universityd| 1967;

500 a| Submitted to the faculty of the Department of Biology.;

500 a| Advisor: Everett C. Simpson;

520 3 a| In 10 untreated control rats of the Holtzman strain, two consecutive periods of pseudopregnancy were not induced by cervical stimulation. The administration of estrogen-progesterone injections to 30 experimental rats was begun on the twelfth or thirteenth day of the first pseudopregnancy, and this pseudopregnancy was extended. The longest extended first pseudopregnancy was exhibited in rats that received hormonal injections beginning on day 12. Consecutive pseudopregnancies were induced only when first pseudopregnancies were dependent upon intervals at which hormones were given during second pseudopregnancies. Investigation of ovaries of rats in a first pseudopregnancy as compared to those in a second consecutive pseudopregnancy, showed no significant difference between the numbers of corpora lutea observed in each group. There was however, a significant reduction in the corpora lutea of control rats which were not induced into a second consecutive pseudopregnancy. This was thought to have resulted in an insufficiency of gonadal hormones, and it was hypothesized that this insufficiency prevented the induction of a second consecutive pseudopregnancy in the control animals.;

504 a| Includes bibliographical references (leaves 38-40).;

650 0 a| Estrogen.=| ^A285710;

650 0 a| Progesterone.=| ^A7484;

650 0 a| Rats as laboratory animals.=| ^A10876;

650 7 a| Estrogen.2| fast0| (OCoLC)fst00915634;

650 7 a| Progesterone.2| fast0| (OCoLC)fst01078645;

655 7 a| dissertations.2| aat0| (CStmoGRI)aatgf300028029;

655 7 a| Academic theses.2| fast0| (OCoLC)fst01726453;

655 7 a| Academic theses.2| lcgft;

655 7 a| Thèses et écrits académiques.2| rvmgf0| (CaQQLa)RVMGF-000001173;

700 1 a| Simpson, Everett C.,e| degree supervisor.?| UNAUTHORIZED;

710 2 a| East Carolina University.b| Department of Biology.=| ^A637467;

856 41 z| Access via ScholarShipu| http://hdl.handle.net/10342/11175;

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The induction of consecutive pseudopregnancies by estrogen-progesterone injections in the mature albino rat, Rattus norvegicus (Berkenhout) / by Michael Reed Garrett.

Author/creator	Garrett, Michael Reed, 1943- author.
Other author	Simpson, Everett C., degree supervisor.
Other author	East Carolina University. Department of Biology.
Format	Theses and dissertations
Production	1967.
Description	40 leaves ; 28 cm
Supplemental Content	Access via ScholarShip
Subjects	Estrogen. Progesterone. Rats as laboratory animals.

Summary	In 10 untreated control rats of the Holtzman strain, two consecutive periods of pseudopregnancy were not induced by cervical stimulation. The administration of estrogen-progesterone injections to 30 experimental rats was begun on the twelfth or thirteenth day of the first pseudopregnancy, and this pseudopregnancy was extended. The longest extended first pseudopregnancy was exhibited in rats that received hormonal injections beginning on day 12. Consecutive pseudopregnancies were induced only when first pseudopregnancies were dependent upon intervals at which hormones were given during second pseudopregnancies. Investigation of ovaries of rats in a first pseudopregnancy as compared to those in a second consecutive pseudopregnancy, showed no significant difference between the numbers of corpora lutea observed in each group. There was however, a significant reduction in the corpora lutea of control rats which were not induced into a second consecutive pseudopregnancy. This was thought to have resulted in an insufficiency of gonadal hormones, and it was hypothesized that this insufficiency prevented the induction of a second consecutive pseudopregnancy in the control animals.
General note	Submitted to the faculty of the Department of Biology.
General note	Advisor: Everett C. Simpson
Dissertation note	M.A. East Carolina University 1967
Bibliography note	Includes bibliographical references (leaves 38-40).
Genre/form	dissertations.
Genre/form	Academic theses.
Genre/form	Academic theses.
Genre/form	Thèses et écrits académiques.

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The induction of consecutive pseudopregnancies by estrogen-progesterone injections in the mature albino rat, Rattus norvegicus (Berkenhout) / by Michael Reed Garrett.

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