Studies of Flavanones. XVII-XVIII. XVIII. Nitration of Flavanone.

Genetic Studies of Collagen Types Xv and Xviii

Overlapping genomic clones coding for the α1 chain of mouse type XV collagen (Col15a1) were isolated. The gene was found to be 110 kb in length and to contain 40 exons. Analysis of the proximal 5'-flanking region showed properties characteristic of a housekeeping gene promoter, and functional analysis identified cis-acting elements for both positive and negative regulation of Col15a1 gene expre...

Xviii. Speech Communication'

The objectives of our work are to further our understanding of (a) the process whereby human listeners decode an acoustic speech signal into a sequence of discrete linguistic symbols, such as phonemes; and (b) the process whereby human talkers encode a sequence of discrete linguistic symbols into an acoustic signal. Current research activities related to these objectives include studies, aided ...

Chemistry of bleomycin. XVIII. carbon-13 NMR studies.

During chemical studies of bleomycin, many fragments and derivatives have been isolated and characterized. The 13C-NMR spectra of these compounds were taken and analyzed for structural information, and the complete assignment of the spectra was achieved. The 13C-chemical shift map thus obtained contains information about the structure and conformation and will be useful for studies on the chemi...

Xviii : Validation of Programming Models

Xviii. Cutaneous Sensory Mechanisms

We have previously reported1 that dogs raised in restriction cages from puppyhood to maturity have greater difficulty than normally reared littermates in performing a simple black-white discrimination and in subsequent reversal training. Since the restricted dogs had some patterned visual stimulation in their cages, their difficulty in performing a discrimination and then utilizing it in a new ...