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The present work extends an earlier investigation on buoyancy-driven air flow through a stairwell. A series of experiments was performed in order to study the coupled flows of mass and heat between the three floors of a full-scale residential building. A single tracer gas decay technique was adopted. Air flow rates through the specific stairwell were estimated using the computational fluid dynamics (CFD) method. These rates showed very good agreement with the corresponding values provided by the formulas, proposed in an earlier study. Finally, the simulated fields of air velocity and concentration of tracer gas were compared with the experimental data. In this report the organizer activity of follistatin was examined by Fake Ray Ban Wayfarer transplation of pieces of the animal cap, isolated from embryos injected with follistatin mRNA, into the blastocoele of an early host blastula (Einsteck explants). Host embryos developed a secondary axis consisting of myotomes, notochord and neural tube of the trunk or tail character. Secondary structures that are characteristic of a head, such as cement glands or brain and eyes, did not Fake Ray Bans Canada develop in these experiments. These findings suggested that follistatin may have the trunk and tail organizer activity, while it was not possible to reconstitute its head organizer activity.