In plants, gametes, along with accessory cells, are formed by the haploid gametophytes through a series of mitotic divisions, cell specification and differentiation events. How the cells in the female gametophyte of flowering plants differentiate into gametes (the egg and central cell) and accessory cells remains ...

Macrophages: important accessory cells for reproductive function Paula E. Cohen,* Kayoko Nishimura functions, can be considered as essential accessory cells for normal reproductive functioning. J. Leukoc of the bone marrow, monocytes, macrophages, osteoclasts, and microglia. Cells of the ...

Here, we report a case of intrapancreatic accessory spleen confirmed by pathologic diagnosis and discuss its differential diagnosis and surgical management with a review of the literature.

To determine if some malignant cells serve an accessory function and promote osteoclast differentiation, we cultured T47D human breast cancer cells with murine osteoclast precursors. We find bone resorbing osteoclasts develop with 7-10 days and do so in a...

... mechanisms similar to those of the limb and accessory sex organs to pattern penile postnatal morphogenesis and differentiation and ... the embryonic precursor of both the penis and accessory sex organs. T...

... for anatomic, morphologic, and histologic examination of the accessory sex organs. The 2nd group consisted of castrated animals. Six ... determine the effect of absence of testosterone on accessory sex or...

... Descriptors : (*FUNCTIONAL ANALYSIS, DIFFERENTIAL EQUATIONS), (*DIFFERENTIAL EQUATIONS, FUNCTIONAL ANALYSIS), DIFFERENCE ...

The goal of this investigation is to test the hypothesis that estrogen agonists and antagonists promote differential transcriptional activity of the estrogen receptor (ER) by altering accessory protein interactions. We have shown that one or more ER-assoc...

The goal of this investigation is to test the hypothesis that estrogen agonists and antagonists promote differential transcriptional activity of the estrogen receptor (ER) by altering accessory protein interactions. We have shown that one or more ER-assoc...

Very few cases of pheochromocytoma in functional accessory adrenal glands have been documented in literature. We present a twenty-four year old Nigerian female who presented with pheochromocytoma. Investigations revealed a suprarenal mass, which was diagnosed as an accessory gland adrenal tumour at surgery. This shows that ...

The fine structure of the accessory eye of the shrimp, Palaemonetes, was studied after light and dark adaptation. Adjacent to the principal compound eye, the accessory eye is a small compound eye composed of about 20 ommatidia which are smaller in structure to the ommatidia of the principal compound eye. During dark adaptation, rhabdomal microvilli ...

for identifying pheromone molecules. Key words: vomeronasal organ; accessory olfactory bulb; pheromones; sex in the Accessory Olfactory Bulb Correlate with Sex-Specific Behaviors Arvind Kumar, Carol A. Dudley, and Robert L or accessory olfactory system plays a crucial role because lesions of the vomeronasal organ (VNO

Phoenix et al. (Phoenix et al., 1959) were the first to propose an essential role of fetal testosterone exposure in the sexual differentiation of the capacity of mammals to display male-typical mating behavior. In one experiment control male and female guinea pigs as well as females given fetal testosterone actually showed equivalent levels of mounting behavior when ...

... of the vas deferens and the accessory male genital gland; Distribution and function of adrenergic nerves in the rabbit fallopian tube; Effects of acute ...

The initial Pb isotopic composition of anatectic granites is modelled as a mixture of Pb derived from major minerals that have characteristically low {sup 238}U/{sup 204}Pb and {sup 232}Th/{sup 204}Pb ratios, with Pb contributed from dissolved accessory minerals with characteristically high {sup 238}U/{sup 204}Pb and {sup 232}Th/{sup 204}Pb ratios. The initial Pb isotopic ...

... Descriptors : (*FUNCTIONAL ANALYSIS, DIFFERENTIAL EQUATIONS), (*DIFFERENTIAL EQUATIONS, STABILITY), DIFFERENCE EQUATIONS ...

BackgroundDuring mating, insect males eject accessory gland proteins (Acps) into the female genital tract. These substances are known to affect female post-mating behavior and physiology. In addition, they may harm the female, e.g., in reducing its lifespan. This is interpreted as a consequence of sexual antagonistic co-evolution. Whereas sexual conflict abounds in non-social ...

This concludes a series of descriptive statistical reports on discrete cranial traits in 81 human populations from around the world. Four variants classified as vessel and nerve related characters were investigated: patent condylar canal, supraorbital foramen; accessory infraorbital foramen; and accessory mental foramen. A significant asymmetric occurrence ...

This concludes a series of descriptive statistical reports on discrete cranial traits in 81 human populations from around the world. Four variants classified as vessel and nerve related characters were investigated: patent condylar canal; supraorbital foramen; accessory infraorbital foramen; and accessory mental foramen. A significant asymmetric occurrence ...

The HIV protein, Vpr, is a multifunctional accessory protein critical for efficient viral infection of target CD4⁺ T cells and macrophages. Vpr is incorporated into virions and functions to transport the preintegration complex into the nucleus where the process of viral integration into the host genome is completed. This action is ...

Accessory minerals commonly occur attached to or included in the major crystalline phases of felsic and some intermediate igneous rocks. Apatite is particularly common an inclusions, but Fe-Ti oxides, pyrrhotite, zircon, monazite, chevkinite and xenotime are also known from silicic rocks. Accessories may nucleate near the host crystal/liquid interface as a ...

... a variant can be divided into twoTrait 30: accessory mental foramen, a small opening often found below mental foramen( ... ...

Contents: Differentiation of macrophages; Factors that alter macrophage activities; Factors produced by macrophages; Anti-tumor cytotoxicity of macrophages; Suppressive activities of macrophages; Regulation of immune responses by macrophages; Accessory ce...

... doublesex gene controls somatic sexual differentiation by ... 1993) The protein Sex-lethal antagonizes ... interactions with additional accessory factors. ...

... Gesteland, R. F. and J. F. Atkins. The RNA World. Cold Spring Harbor Laboratory Press. Cold Spring Harbor, ... ...

The mammalian accessory olfactory bulb (AOB) is chemoarchitecturally heterogeneous in that it stains differentially with a number of markers; the receptor cells that project to the AOB are similarly heterogeneous. What is the significance of this heterogeneity? We have found that the AOB of the gray, short-tailed opossum, Monodelphis domestica, stains ...

The glossopharyngeal, vagus and spinal accessory nerves are closely related anatomically, and to a certain extent, functionally. We present an overview of their anatomy, highlighting the important clinical and imaging implications. The main pathologic lesions arising from these nerves are also discussed and the imaging features reviewed. PMID:20233644

One of the most fundamental questions in the control of gene expression in mammals is how epigenetic methylation patterns of DNA and histones are established, erased, and recognized. This central process in controlling metazoan gene expression includes coordinated covalent modifications of DNA and its associated histones. This review focuses on recent developments in characterizing the ...

The aim of the study was to investigate the presence, localisation and function of brain nitric oxide synthase (bNOS) in the male genital accessory glands of rats in the course of their postnatal development. Localisation of the bNOS was immunocytochemically investigated in the epididymis, seminal vesicle and ventral prostate of male Wistar strain rats at ...

NK cell development requires IL-15, which is "trans-presented" to IL-15R?? on NK cells by IL-15R? on other cells. In this study, we report that different levels of IL-15 trans-presentation are required for different NK cell developmental events to reach full maturation status. Because the IL-15R? intracellular domain has the capacity to recruit signaling molecules, we generated knockin and ...

In the tiger salamander retina, visual signals are transmitted to the inner retina via six morphologically distinct types of photoreceptors: large/small rods, large/small single cones, and double cones composed of principal and accessory members. The objective of this study was to determine the morphology of these photoreceptors and their synaptic interconnection with bipolar ...

Purified T lymphocytes fail to proliferate in response to antigenic and mitogenic stimuli when cultured in the presence of accessory cells that have been exposed in vitro to sublethal doses of UVB radiation. Because proliferation represents a final stage in the T-cell activation process, the present study was conducted to determine whether T cells were able to progress through ...