Bilateral hibernomas in the femoral regions of a dog.

A 14-year-old intact male Chihuahua dog was presented with masses located between the and adductor muscles in both hind limbs. Based on histopathological, immunohistochemical, and ultrastructural findings, we diagnosed these masses as bilateral hibernomas in the femoral regions. The dog had no evidence of recurrence or metastasis of the hibernomas through a 4-month postoperative follow-up.

In vivo characterization of a Toxoplasma gondii strain TgCatJpTy1/k-3 isolated from a stray cat in Japan.

The Toxoplasma gondii strain TgCatJpTy1/k-3 (K-3), isolated from a stray cat in Tokyo, Japan, is categorized as a type II genotype. Since the K-3 strain is empirically known to form relatively larger cysts and exhibit weak pathogenesis in a mouse, it could serve as a useful model organism to study chronic T. gondii infection in the host.

Susceptibility to Various Coccidiostats in the Murine Coccidian Parasite Eimeria krijgsmanni.

Introduction: Murine Eimeria spp. have been used as effective experimental models of disease instead of large mammalian hosts such as cattle. We here examine drug susceptibility of the uncharacterized murine intestinal protozoan parasite, Eimeria krijgsmanni.

Comb Atrophy after Bile Duct Ligation in Chickens.

Gross, histological, and immunohistochemical changes in the combs of chickens after bile duct ligation (BDL) are described. Gross reductions in comb size and volume and lower serum testosterone levels were evident in chickens after BDL. Histologically, atrophic combs were characterized by reduced blood capillary diameter, decreased acid mucopolysaccharides, thinning of the stratum germinativum of the epidermis and dermis, and reduced immunostaining intensity of androgen receptors.

Course of induced infection by Eimeria krijgsmannni in immunocompetent and immunodeficient mice.

Recently, we have demonstrated the utility of Eimeria krijgsmanni as a novel mouse eimerian parasite for elucidating the biological diversity. The parasite showed notable infectivity to mice with various levels of immune status and susceptibility to antimicrobial agents including coccidiostat. However, the detailed lifecycle of E.

Evaluation of Eimeria krijgsmanni as a murine model for testing the efficacy of anti-parasitic agents.

Murine Eimeria spp. have been used as effective models of disease instead of large mammalian hosts such as cattle. We attempted to establish in vivo and in vitro assays using a murine intestinal protozoan, Eimeria krijgsmanni, which we previously isolated, to test anti-parasitic agents.

Age-related histological changes in kidneys of Brown Norway rat.

In this study, age-dependent histological changes in the kidneys of Brown Norway rat, a strain useful for conducting aging research, were evaluated. Examination was performed at 3, 12, 18, 24 and 30 months of age. Sclerotic and hypertrophic changes of the glomeruli were observed, and quantitative scores of these changes persistently increased with age.

Bone mineral analysis through dual energy X-ray absorptiometry in laboratory animals.

To determine how to eliminate species difference in animal bone experiment, bone mineral content (BMC) was measured using dual energy X-ray absorptiometry (DXA) on the femurs of laboratory mice (Mus musculus) and rats (Rattus norvegicus), and common marmosets (Callithrix jacchus). Measures were taken on femurs in situ, detached from the body, skinned and defleshed, or dried completely. When the BMC of the bone measured in the intact limb attached to the trunk was set at 100%, the actual BMC of the dry bone was 58.

Body and major organ weights of A/J-Chr 11(SM) consomic mice.

The body and major organ weights of A/J-Chr 11(SM) consomic mice were compared to those of the progenitor strains, A/J and SM/J. The weights of the body and organs, except for those of the brain and uterus, were significantly greater in A/J mice than in SM/J mice. However, those of consomic mice were highly variable.

A morphometric study of the adrenal cortex of the female DDD mouse.

The aim of this study was to determine whether the thickness of the adrenocortical zone is associated with age in virgin and parous female DDD mice. The zona reticularis and zona glomerulosa of parous mice tended to be thicker than those of virgin mice at all ages. The zona fasciculata lactating parous mice was significantly thicker than that of virgin mice at 20 weeks of age (P<0.