Microglial cells within the developing central nervous system (CNS) originate from mesodermic precursors of hematopoietic lineage that enter the nervous parenchyma from the meninges, ventricular space and/or blood stream. Once in the nervous parenchyma, microglial cells increase in number and disperse throughout the CNS; these cells finally differentiate to become fully ramified microglial cell...

The meningeal space is occupied by a diverse repertoire of immune cells. Central nervous system (CNS) injury elicits a rapid immune response that affects neuronal survival and recovery, but the role of meningeal inflammation remains poorly understood. Here, we describe type 2 innate lymphocytes (ILC2s) as a novel cell type resident in the healthy meninges that are activated after CNS injury. IL...

I N CHRONIC GRANULOCYTIC LEUKEMIA neurologic manifestations due to leukemic infiltration of the central nervous system occur uncommonly.’ In acute lymphoblastic leukemia, on the other hand, diffuse leukemic infiltration of the lepto-meninges is frequent and must be differentiated from neurologic involvement due to infection, hemorrhage, or drug toxicity.2 \Vhen acute myeloblastic transformation...

Tumours of the nervous system are rare in wild and captive mammals. In this report, we describe an intracranial, solid, space-occupying lesion originating from meninges a Nilgai antelope (Boselaphus tragocamelus). Histologically, tumour had conspicuous microcystic appearance with features similar to histological subtype meningioma described humans. This is first such reported species.

The spinal meninges play a mechanical protective role for the cord. Better knowledge of behavior these tissues wrapping cord is required to accurately model stress and strain fields during physiological or traumatic motions. Then, properties along canal are not well documented. aim this study was quantify elastic meningeal porcine in both longitudinal direction circumferential directions dura-a...

Previous work has shown that nude (nu/nu) mice additionally immunosuppressed by splenectomy, sublethal irradiation, and treatment with antiasialo GM1 antiserum (SIA-nu/nu mice) have no detectable natural killer activity and allow the growth of human malignant lymphoblasts. We show here that all SIA-nu/nu mice engrafted intravenously with 5 x 10(6) malignant lymphoblasts originally derived from ...

Mf1 encodes a forkhead/winged helix transcription factor expressed in many embryonic tissues, including prechondrogenic mesenchyme, periocular mesenchyme, meninges, endothelial cells, and kidney. Homozygous null Mf1lacZ mice die at birth with hydrocephalus, eye defects, and multiple skeletal abnormalities identical to those of the classical mutant, congenital hydrocephalus. We show that congeni...