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This calculator computes EC 80 or EC 90 (etc.) from EC 50. How? 1. Enter EC 50 I will enter: EC 50 as concentration. For 1nM, enter '1e-9'.

https://www.graphpad.com/quickcalcs/ecanything1/

This model fits the two IC50 values of the unlabelled ligand. It does not report the two Ki values. The Ki values depend on the IC50s, the concentration of ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

It fits four parameters: the bottom and top plateaus of the curve, the EC50 (or IC50), and the slope factor (Hill slope). This curve is symmetrical around ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

You have a choice, in the Confidence tab, to either mark selected parameters as "unstable", to mark entire fits as "ambiguous", or neither.

https://www.graphpad.com/guides/prism/latest/curve-fitting/

This is not the same as Vmax,which would require a maximal concentration of substrate. Ki is the inhibition constant, expressed in the same units as X. The IC50 ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Fit the ratio of two IC50 values directly. From the results in step 8, you can compute what you want to know -- the ratio of the two EC50 values. But Prism ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Equation: Absolute IC50. Receptor binding - Key concepts; Receptor binding - Saturation binding; Receptor binding - Competitive binding; Receptor binding ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Instead you enter the concentration of radioligand and its Kd as constants, and Prism directly fits the Ki of your cold compound. If you want to know the IC50, ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

The term IC50 is used more frequently ("E" stands for effective; "I" stands for inhibitory). Usually the Y values are total binding. If you enter specific ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

It fits four parameters: the bottom and top plateaus of the curve, the EC50 (or IC50), and the slope factor (Hill slope). This curve is symmetrical around ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/