Which cells in the immune system identify pathogens and distinguish one pathogen from another?

T cells

phagocytes

B cells

red blood cells

Which best represents the law of conservation of mass ?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_