G A Engbretson
Overview
Explore the profile of G A Engbretson including associated specialties, affiliations and a list of published articles.
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Snapshot
Articles
18
Citations
137
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Recent Articles
11.
Engbretson G, Brecha N, Reiner A
Cell Tissue Res
. 1982 Jan;
227(3):543-54.
PMID: 6185229
We examined the parietal eye visual system of the iguanid lizard Uta stansburiana for the presence of substance P-like immunoreactivity by use of both immunofluorescence and peroxidase-antiperoxidase techniques. In the...
12.
Engbretson G, Reiner A, Brecha N
J Comp Neurol
. 1981 May;
198(1):155-65.
PMID: 7229138
Histochemical and autoradiographic analyses of the axonal transport of horseradish peroxidase and tritiated amino acids were employed to study the central connectivity of the lizard parietal eye. Somata and processes...
13.
Witkovsky P, Levine J, Engbretson G, Hassin G, Macnichol Jr E
Vision Res
. 1981 Jan;
21(6):867-73.
PMID: 7314464
No abstract available.
14.
Engbretson G, Hassin G, Witkovsky P
Vision Res
. 1979 Jan;
19(4):367-73.
PMID: 473604
No abstract available.
15.
Witkovsky P, Engbretson G, Ripps H
J Gen Physiol
. 1978 Dec;
72(6):821-36.
PMID: 731199
The visual pigment content of rod photoreceptors in Xenopus larvae was reduced greater than 90% through a combination of vitamin A-deficient diet and constant light. Thereafter, a dose of either...
16.
Engbretson G, Witkovsky P
J Gen Physiol
. 1978 Dec;
72(6):801-19.
PMID: 731198
Xenopus larvae were raised on a vitamin A-free diet under constant illumination until their visual pigment content had decreased to between 8% of normal and an undetectably low level. After...
17.
Engbretson G, Hutchison V
J Exp Zool
. 1976 Oct;
198(1):29-38.
PMID: 978159
Lizards were acclimatized to various regimes of temperature (15 degrees, 35 degrees C) and photoperiod (LD 08:16, 16:8). Parietalectomized, sham operated, and control animals were placed in thermal gradients and...
18.
Engbretson G, Lent C
Proc Natl Acad Sci U S A
. 1976 Feb;
73(2):654-7.
PMID: 1061165
The parietal eye of the lizard responds to illumination by sending afferent impulses to the pineal gland during daylight, the photophase. The pineal gland has efferently conducting neurons which are...