Afroalpine vascular plants : a taxonomic revision
LUMINANCE DISCRIMINATION OF BRIEF FLASHES UNDER VARIOUS CONDITIONS OF ADAPTATION.
AN IMPROVED INTERSTITIAL WATER SAMPLER
Short latency activation of pyramidal tract cells by Group I afferent volleys in the cat.
1. The contralateral bulbar pyramids were explored with low impedance micro-electrodes in cats anaesthetized with chloralose to reveal the effect of Group I afferent volleys (deep radial nerve of the forelimb) on pyramidal tract (Pt) cells.2. Low rate (0.5/sec) stimulation of Group I afferents produced small responses (5-30 muV) in the bulbar pyram...
Efficient, inefficient, and abortive infection of different mammalian cells by small RNA viruses.
We have compared the biochemical capacity of cultured cells from a variety of animal sources to replicate the genetic information of two small RNA viruses. Mengovirus is shown to infect and kill cultured cells from many animal species regardless of whether the virus replicated well, moderately, or poorly in any cell type. The production of infectio...
Messenger ribonucleic acid of cerebral nuclei.
1. RNA was isolated from crude nuclear preparations and from ribosomes derived from rat brain and liver. Nuclear RNA was obtained by lysis of the nuclei with sodium dodecyl sulphate, followed by denaturation and removal of DNA and protein with hot phenol. 2. Base composition analyses indicated that the cerebral nuclear RNA preparation contained a h...
Photosynthetic CO(2) Fixation by Green Cymbidium (Orchidaceae) Flowers.
An unusual karyotype in a patient with signs suggestive of Down's syndrome.
Hybridizable ribonucleic acid of rat brain.
1. Cerebral RNA of adult and newborn rats was labelled in vivo by intracervical injection of [5-(3)H]uridine or [(32)P]phosphate. Hepatic RNA of similar animals was labelled by intraperitoneal administration of [6-(14)C]orotic acid. Nuclear and cytoplasmic fractions were isolated and purified by procedures involving extraction with phenol and repea...
OBSERVATIONS OF GASES IN CHESAPEAKE BAY SEDIMENTS
This article is in Free Access Publication and may be downloaded using the “Download Full Text PDF” link at right. © 1969, by the Association for the Sciences of Limnology and Oceanography, Inc.
