Zobrazeno 1 - 4
of 4
pro vyhledávání: '"J C, Helgen"'
Autor:
C U, Meteyer, I K, Loeffler, J F, Fallon, K A, Converse, E, Green, J C, Helgen, S, Kersten, R, Levey, L, Eaton-Poole, J G, Burkhart
Publikováno v:
Teratology. 62(3)
Reports of malformed frogs have increased throughout the North American continent in recent years. Most of the observed malformations have involved the hind limbs. The goal of this study was to accurately characterize the hind limb malformations in w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0c2d26d6ee54109318a3db9ed8182ee8
https://pubmed.ncbi.nlm.nih.gov/10935979
https://pubmed.ncbi.nlm.nih.gov/10935979
Autor:
J. C. Helgen, Ann M. Fallon
Publikováno v:
In vitro cellulardevelopmental biology : journal of the Tissue Culture Association. 26(7)
We have introduced hsp-cat plasmid DNA into Spodoptera frugiperda (Lepidoptera: Noctuidae) cells by transfection with purified DNA (1 to 48 micrograms/ml) mixed with the polycation polybrene (100 micrograms/ml) in serum-free Grace's medium. The hsp-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9a206cc1a881b44d1c9b2cb78b372a2
https://pubmed.ncbi.nlm.nih.gov/2384451
https://pubmed.ncbi.nlm.nih.gov/2384451
Publikováno v:
Archives of Environmental Contamination and Toxicology. 17:459-471
Application of the organophosphorus insecticide temephos to a natural pond in central Minnesota was followed by reduction within 24 hr in all cladocerans, inDiaptomus leptopus and inChaoborus americanus, and increases in cyclopoid copepods, copepod n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1c6ac6d62629cac7a4b9c16a90fde64
https://doi.org/10.1007/bf01055511
https://doi.org/10.1007/bf01055511
Autor:
J. C. Helgen
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 46:1642-1650
The vulnerability of instar I and II larvae of the mosquito Aedes vexans as prey for Chaoborus americanus is much greater than that of the small coexisting prey, Daphnia pulex. Predation on Aedes larvae could reduce Aedes populations in overlapping h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::711814815bebb45a2188484ea0f5a9d7
https://doi.org/10.1139/f89-209
https://doi.org/10.1139/f89-209