Abstract:
A cell culturing device and method of using same are provided. Embodiments of the cell culturing device include a plate having at least one well with a through-hole formed at a bottom wall thereof and a hydrogel matrix disposed in the through hole. The cell culturing device can also include an optically transparent plate at the bottom of the through-hole.
Abstract:
A method and system for arresting objects in an array of chambers including, applying a solution to at least one chamber in an array of chambers, in a manner that does not connect two chambers, such that at least one object in the solution is arrested in said at least one chamber, the chambers having a volume of 0.5 microliters - 3 microliters.
Abstract:
Described herein are embossing methods for forming pico liter well arrays (and other structures), arrangements of such pico liter well arrays, for example, in arrays of pico liter well areas, and methods of forming templates for such embossing. Also described as wells with a refractive index similar to that of an aqueous medium used for supporting cells in the wells.
Abstract:
A method of determining lymph node metastasis in a subject is disclosed, comprising determining at least one structural or functional parameter of a lymph node cell of a lymph node tissue of the subject, wherein an alteration in the at least one structural or functional parameter with respect to a lymph node cell of a healthy lymph node tissue is indicative of lymph node metastasis. Kits and articles of manufacture are also disclosed for determining lymph node metastasis in a subject as well as methods of diagnosing cancer in general.
Abstract:
A method for selecting specific cells from amongst a group of cells and a device for implementing the method, the method including the use of a radiation sensitive medium having a first state that does not immobilize cells and a second state that immobilizes cells wherein the radiation sensitive medium locally transforms from the first state to the second state upon exposure to radiation.
Abstract:
A method of improving wettability of a miniwell array. The method comprises providing a working surface having a miniwell array of a plurality of miniwells, applying a pre-loading treatment with an alcoholic solution on top of the miniwell array, applying a buffer solution on top of the miniwell array, and loading a cell suspension on the miniwell array.
Abstract:
A device (10) for the study of cells comprising a structure (18) with an index of refraction similar to that of water having a three-dimensional arrangement of fluid channels is disclosed. Also disclosed is a method for studying cells comprising seeding a structure (18) with an index of refraction similar to that of water having a three-dimensional arrangement of fluid channels with viable cells, immersing the structure (18) in a physiological medium (14), and observing the development of the seeded cells inside the structure.
Abstract:
A device for the study individual cells including a picowell array (such as an array of microwells, dimples, depressions, tubes or enclosures) and a fluid reservoir in fluid communication with the picowells through channels is disclosed. Preferably, the device has a movable lid that in one rest location allows loading of cells into the picowell array. Preferably the channels of the device are capillary channels. Also disclosed is a device for the automated study of cells including a picowell-bearing device having a picowell array with a movable lid, a lid-moving component, at least one solution dispensing component and a control system functionally associated with the lid-moving component as well as with the solution dispensing component.
Abstract:
A process for measuring enzymatic activity in an identified, isolated, intact, single, viable cell. Each of the viable cells is placed within individual identified locations on a carrier of a cytometer having means to measure enzymatic activity of a single viable cell placed in an identified location. The identified isolated cell is exposed to a substrate of an enzyme to be measured, and the rate of product formed or released following every exposure of the cell to same or different concentrations of the substrate is measured. The isolated cell may be exposed to a sequence of at least two different concentrations of the substrate, and for each exposure the rate of product formed or released is measured. Figure (1) is a model of intracellular conversion of a substrate to a product.
Abstract:
A method and system for arresting objects (802) in an array of chambers including, applying a solution (826) to at least one chamber (804) in an array of chambers (804), in a manner that does not connect two chambers, such that at least one object (802) in the solution (826) is arrested in said at least one chamber (804), the chambers having a volume of 0.5 microliters - 3 microliters.