OBJECTIVE To show apoptotic and mitotic activities in differentiation and proliferation of the trophoblast through the techniques of immunohistochemistry and terminal deoxynucleotidyl transferase-mediated deoxy-uridine triphosphate-biotin nick end labeling (TUNEL), apart from achieving a morphological examination of placental development during early gestation in rats. STUDY DESIGN Animals we...

Abstract. Given a doubling measure μ on R, it is a classical result of harmonic analysis that Calderón-Zygmund operators which are bounded in L(μ) are also of weak type (1, 1). Recently it has been shown that the same result holds if one substitutes the doubling condition on μ by a mild growth condition on μ. In this paper another proof of this result is given. The proof is very close in spirit...

A change in subtask order in the psychological refractory period (PRP) paradigm increases the effect of stimulus onset asynchrony (SOA) on the second response. We used a paradigm with cued, randomly determined subtask order to test the hypothesis that this SOA by order switch overadditivity reflects order control, via "copying" stimulus order. In Experiments 1a and 1b, overadditivity was eviden...

OBJECTIVE This experiment was to evaluate the effects of the dietary energy levels on the physiological parameters and reproductive performance during gestation over three parities in sows. METHODS A total of 52 F1 gilts (Yorkshire×Landrace) were allotted to one of four dietary treatments using a completely randomized design. The treatments contained 3,100, 3,200, 3,300, or 3,400 kcal of meta...

Of the seven chapters, the three written by the editor are the most original and challenging. "Protein Biology" describes some of the characteristics of enzymes as proteins, discusses the role of enzymes in the structure and function of living matter, and touches on biological relativity. The final two chapters by Martin are a rather delightful if eclectic mixture of technical examples and phil...