scriptions of genital and sexual development are clear and thorough. However, his description of the various genetic and hormonal factors involved in sexual development is skimpy and very difficult to follow. For example, Jost's classic experiments on the factors involved in determining sex and internal and external genital development are hardly mentioned, and certainly not dealt with in a way...

J. Anastasovska, N. A. Nadkarni, P-W. So, N. Modi, E. L. Thomas, G. Frost, and J. D. Bell Metabolic and Molecular Imaging Group, Imaging Sciences Department, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College London, London, United Kingdom, Biological Imaging Centre, Imaging Sciences Department, MRC Clinical Sciences Centre, Hammersmith Hospital, Imperial College London, Londo...

Feulgen bands can be obtained at the sites of constitutive heterochromatin in the chromosomes of Anemone blanda, Fritillaria lanceolata and Scilla siberica, simply by means of a short or extended acid hydrolysis. Extended hydrolysis gives positive bands in A. blanda and F. lanceolata and negative bands in S. siberica. Short hydrolysis gives no bands in A. blanda and S. siberica but gives negati...

According to a song by Gilbert and Sullivan, "Every boy and every gal, That’s born into the world alive, Is either a little Liberal, Or else a little Conservative". The division between liberal and conservative intrudes into many aspects of our lives, triggering arguments between relatives and coworkers, flooding the airwaves and cable news with dueling tirades and polemics, and creating politi...

Argumentation for Case-Based Reasoning Kristijonas Čyras Imperial College London London, UK Ken Satoh National Institute of Informatics Tokyo, Japan Francesca Toni Imperial College London London, UK

Regal Fritillary (Speyeria idalia) primarily inhabits prairie, a native grassland of central North America, and occurs rarely in nonprairie grasslands further east. This butterfly has experienced widespread decline and marked range contraction. We analyze Regal Fritillary incidence and abundance during 1977-2014 in 4th of July Butterfly Counts, an annual census of butterflies in North America. ...

Tyler, James C, G. David Johnson, Izumi Nakamura, and Bruce B. Collette. Morphology of Luvarus imperialis (Luvaridae), with a Phylogenetic Analysis of the Acanthuroidei (Pisces). Smithsonian Contributions to Zoology, number 485,78 pages, 50 figures, 1989.—The osteology of the rarely collected epipelagic fish Luvarus imperialis Rafinesque, the louvar, is redescribed, based for the first time on ...

Fritillaria is a perennial herb with medicinal properties. There are 158 species worldwide, 33 of which have reported therapeutic efficacy. Alkaloids the principal constituents in Fritillaria. growing at 2700–4000 m sources extract namely Chuan Beimu (the Pharmacopoeia People’s Republic China, 2020 Edition), low biomass, mainly containing more 5?-cevanine isosteroidal alkaloids cis-configuratio...