Lessons of Resistance from Black Mothers to their Black Sons.

In negotiating the anti-Black oppression, Black mothers communicate lessons of resistance in their racial socialization messages to their Black adolescent boys. We investigate whether distinct strategies of resistance for survival, characterized by individual-focused immediate strategies of resistance, and resistance for liberation, strategies of resistance that disrupt systems of anti-Black oppression rooted in furthering collective Black empowerment, are employed in Black mothers' messages to their sons. In this manuscript, we use longitudinal data of Black mothers' of adolescent boys interviews (N = 31) across three time points (6th-11th grade).

[Medicines and emergency contraception in schools, the role of the nurse].

Among her many roles, the school nurse is authorised to administer certain medicines: over-the-counter products but also, in accordance with specific rules and protocols, medicines which are normally subject to medical prescription and, in certain cases, emergency contraception. Autonomous but acting within a network of partners, she has a pivotal role in public health in schools.

Siderotyping of fluorescent pseudomonads: characterization of pyoverdines of Pseudomonas fluorescens and Pseudomonas putida strains from Antarctica.

Five independent fluorescent pseudomonad isolates originating from Antarctica were analysed for their pyoverdine systems. A pyoverdine-related siderotyping, which involved pyoverdine-induced growth stimulation, pyoverdine-mediated iron uptake, pyoverdine analysis by electrophoresis and isoelectric focusing, revealed three different pyoverdine-related siderotypes among the five isolates. One siderotype, including Pseudomonas fluorescens 1W and P.

Effect of siderophores, catecholamines, and catechol compounds on Listeria spp. Growth in iron-complexed medium.

Almost all bacteria require iron for growth and virulence expression. However, Listeria spp. do not produce any siderophore for iron acquisition.

Utilization of iron-catecholamine complexes involving ferric reductase activity in Listeria monocytogenes.

Listeria monocytogenes is a ubiquitous potentially pathogenic organism requiring iron for growth and virulence. Although it does not produce siderophores, L. monocytogenes is able to obtain iron by using either exogenous siderophores produced by various microorganisms or natural catechol compounds widespread in the environment.