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T cells from an HLA-DR11/DR12 responder were stimulated in mixed lymphocyte culture with cells carrying the DR1 antigen. After priming, T cells proliferated in response to both DR1-positive-stimulating cells and a peptide derived from a polymorphic region of the HLA-DR beta 1*0101 chain presented by responder's antigen-presenting cells (APC). The dominant… (More)

Here we investigate the role of Phosphatidylinositol (4,5) bisphosphate (PIP(2)) in the physiological activation of primary murine T cells by antigen presenting cells (APC) by addressing two principal challenges in PIP(2) biology. First, PIP(2) is a regulator of cytoskeletal dynamics and a substrate for second messenger generation. The relative importance… (More)

It has been suggested that self major histocompatibility complex (MHC) peptides bound to self MHC molecules may be involved in the intrathymic induction of self tolerance. We studied the antigenicity of synthetic peptides derived from the first domain of DR beta 1*0101 chain in a DR beta 1*0101 responder. We found that a peptide corresponding to residues… (More)

- E G Nette, Y P Xi, Y K Sun, A D Andrews, D W King
- Mechanisms of ageing and development
- 1984

Ultraviolet-induced unscheduled DNA synthesis (i.e. repair synthesis) in human epidermal cells was measured as a function of age. Normal mammary skin specimens were obtained at surgery from 36 female patients, ranging in age from 17 to 77 years. The enzymatically isolated epidermal cells were analyzed for two parameters: (1) the number and percentage of… (More)

- Yi Sun
- 2015

We show that the traces of Uq(sl 2)-intertwiners of [ESV02] valued in the three-dimensional evaluation representation converge in a certain region of parameters and give a representation-theoretic construction of Felder-Varchenko's hypergeometric solutions to the q-KZB heat equation given in [FV02]. This gives the first proof that such a trace function… (More)

- Yi Sun
- 2014

1. The quantization formalism 1.1. Preliminaries and notation. Throughout, we work over C. Assume that g is the reductive Lie algebra associated to a reductive algebraic group G. 1.2. Three notions of quantization. Throughout this section, let A 0 be a commutative Poisson algebra. We describe the concepts of formal, graded, and filtered quantization of A 0… (More)

- Yi Sun, Quantization, Sn
- 2014

1.1. A gl n-action on differential operators. Recall the final result of the previous talk.

The trapping-mediated dissociative chemisorption of three isotopes of propane (C(3)H(8), CH(3),CD(2)CH(3), and C(3)D(8)) has been investigated on the Pt(110)-(1 x 2) surface, and both the apparent activation energies and the preexponential factors of the surface reaction rate coefficients have been measured. In addition, the probabilities of primary and… (More)

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