Max Ludwig Henning Delbrück applied his knowledge of theoretical physics to biological systems such as bacterial viruses called bacteriophages, or phages, and gene replication during the twentieth century in Germany and the US. Delbrück demonstrated that bacteria undergo random genetic mutations to resist phage infections. Those findings linked bacterial genetics to the genetics of higher organ...

On June 20, 1978, Wolfgang BARGMANN, Professor emeritus of Kiel University and Chairman of the Department of Anatomy from 1946 to 1974, died at the age of seventy-two from cerebral hemorrhage. His name was well known to anatomists and biologists worldwide, not only for his outstanding accomplishments in the field of neurosecretion but also as the editor of Cell and Tissue Research (formerly Zei...

The rhythmic heart beat is regulated by a precisely timed sequence of pacemaking impulses that propagate through the cardiac conduction system (Tawara, 1906; Goldenberg and Rothberger, 1936; Bozler, 1942; Fig. 1A). Pacemaking impulses are periodically generated at the sinoatrial node and spread through atrial myocytes initiating contraction of both atrial chambers. The electrical excitation is ...

The publication of this issue of PrehospitalandDisasterMedicine coincides with the centennial of the 1906 Great San Francisco Earthquake. The 1906 San Francisco Earthquake does not rank with the larger earthquakes in world history and is not even the largest earthquake in US history. In fact, readers of this journal will recall many recent earthquakes that produced exponentially greater health ...

O objetivo deste artigo é investigar as experiências sociais de africanos e afro-brasileiros “centenários” na cidade do Rio Janeiro entre 1890-1906. A proposta consiste em avaliar condições sob quais esses sujeitos viviam, teciam relações se deslocavam pela capital federal nos anos iniciais da Primeira República. Para realizar essa tarefa, fontes mobilizadas abrangem o Censo Municipal 1906 os p...

The moment magnitude M 7.8 earthquake in 1906 profoundly changed the rate of seismic activity over much of northern California. The low rate of seismic activity in the San Francisco Bay region (SFBR) since 1906, relative to that of the preceding 55 yr, is often explained as a stress-shadow effect of the 1906 earthquake. However, existing elastic and visco-elastic models of stress change fail to...