This level of defense is also considered non-specific. 3) The third line includes the two specific defenses-your humoral or antibody mediated immune response and your cell mediated immune response. In both cases your body is responding to a particular antigen or infectious agent.
SQL MAX() function: The aggregate function SQL MAX() is used to find the maximum value or highest value of a certain column or expression over a group. It determines the largest of all selected values of a column. The sql max function can also be worked on specified column and addition can also be used with sql max function.
Aggregate always returns a data.frame as a result. This data.frame will contain the (now unique) values from the input parameter by as the first column and then columns containing the results of the call to the function in the FUN parameter applied to the parts of the columns of the inputted data.frame.